Author: Ameeba

Overview

CVE-2025-40798 is a high-risk vulnerability discovered in the User Management Component (UMC) of the SIMATIC PCS neo, versions V4.1 and V5.0. This vulnerability is significant due to its potential to allow an unauthenticated remote attacker to cause a Denial of Service (DoS) condition, potentially compromising the system or leading to data leakage.

Vulnerability Summary

CVE ID: CVE-2025-40798
Severity: High (CVSS: 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise, potential data leakage

Affected Products

Product | Affected Versions

SIMATIC PCS neo V4.1 | All versions
SIMATIC PCS neo V5.0 | All versions
User Management Component (UMC) | All versions < V2.15.1.3 How the Exploit Works

The vulnerability is the result of an out-of-bounds read error in the UMC component of SIMATIC PCS neo. An unauthenticated remote attacker can exploit this vulnerability by sending specially crafted network packets to the affected system. If successfully exploited, this vulnerability could cause a denial of service condition, disrupting the affected system’s operations and potentially leading to system compromise or data leakage.

Conceptual Example Code

Below is a conceptual example of a malicious network packet that might exploit this vulnerability:

POST /UMC/endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "exploit_payload": "Out-of-bounds read data" }

Please note that this is a hypothetical example and the actual exploit code could be different depending on the attacker’s approach and the specific configurations of the targeted system.

Mitigation Guidance

Affected users are advised to apply the latest patches from the vendor as soon as possible. If patching is not immediately possible, using Web Application Firewalls (WAFs) or Intrusion Detection Systems (IDS) could serve as temporary mitigation, although this is not a long-term solution and patching the system is strongly recommended.

Overview

This report presents an in-depth look at a newly identified vulnerability, CVE-2025-40797, affecting the User Management Component (UMC) of Siemens’ SIMATIC PCS neo. This cybersecurity flaw could potentially grant unauthenticated remote players the ability to cause a denial of service condition, leading to potential system compromise and data leakage. The severity of this vulnerability underscores the importance of immediate mitigation.

Vulnerability Summary

CVE ID: CVE-2025-40797
Severity: High (CVSS: 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Denial of Service, Potential System Compromise, Data Leakage

Affected Products

Product | Affected Versions

SIMATIC PCS neo V4.1 | All versions
SIMATIC PCS neo V5.0 | All versions
User Management Component (UMC) | All versions < V2.15.1.3 How the Exploit Works

The exploit takes advantage of an out-of-bounds read vulnerability in the UMC of SIMATIC PCS neo. An unauthenticated attacker can send specially crafted network requests to the UMC, leading to an out-of-bounds read condition. This condition could cause the UMC to crash or behave unexpectedly, potentially causing a denial of service condition or even system compromise and data leakage.

Conceptual Example Code

Below is a conceptual example of how an attack could occur. In this case, an HTTP request is sent to the vulnerable endpoint with a malicious payload:

POST /UMC_vulnerable_endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "malicious_payload": "Crafted string causing out-of-bounds read" }

Mitigation Guidance

Affected parties should apply the vendor patch as soon as possible to address this vulnerability. If the patch cannot be immediately applied, the use of a web application firewall (WAF) or intrusion detection system (IDS) can serve as a temporary mitigation strategy. Regular updates and patches are the recommended way to guard against vulnerabilities such as CVE-2025-40797.

Overview

The cybersecurity vulnerability designated as CVE-2025-40796 is a critical issue affecting SIMATIC PCS neo V4.1, V5.0, and the User Management Component (UMC) in all versions prior to V2.15.1.3. The vulnerability is an out-of-bounds read issue in the integrated UMC component, which could allow an unauthenticated remote attacker to cause a denial of service condition.

Vulnerability Summary

CVE ID: CVE-2025-40796
Severity: High (7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Denial of service, potential system compromise, and potential data leakage

Affected Products

Product | Affected Versions

SIMATIC PCS neo | V4.1 (All versions), V5.0 (All versions)
User Management Component (UMC) | All versions < V2.15.1.3 How the Exploit Works

An out-of-bounds read vulnerability exists in the integrated UMC component of the affected products. This vulnerability could be exploited by sending a specially crafted packet to the target system. An unauthenticated remote attacker could leverage this weakness to trigger a denial of service condition or potentially gain unauthorized access to the system.

Conceptual Example Code

Below is a conceptual example of a malicious packet that could potentially exploit this vulnerability:

POST /UMC/endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "exploit_payload": "buffer_overflow_data" }

This packet contains an artificially large or malformed data payload that, when processed by the flawed UMC component, might cause an out-of-bounds read error, leading to a denial of service or possibly system compromise.
Note: This is a hypothetical example. Actual exploit code may vary significantly.

Overview

This report discusses the critical vulnerability CVE-2025-57816 that affects the Fides open-source privacy engineering platform. The vulnerability is related to the ineffective IP-based rate limiting in the Fides Webserver API, which potentially allows attackers to bypass the rate limits and cause denial of service. This vulnerability is significant due to its potential for causing system compromise or data leakage.

Vulnerability Summary

CVE ID: CVE-2025-57816
Severity: High (CVSS: 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise or data leakage

Affected Products

Product | Affected Versions

Fides | Prior to version 2.69.1

How the Exploit Works

The vulnerability lies in the Fides Webserver API’s built-in IP-based rate limiting feature. This feature, designed to protect the system from being overwhelmed by too many requests, is ineffective in environments with CDNs, proxies or load balancers. The system incorrectly applies rate limits based on directly connected infrastructure IPs rather than client IPs, and stores counters in-memory rather than in a shared store. This allows attackers to bypass intended rate limits and potentially cause denial of service.

Conceptual Example Code

An attacker could potentially exploit this vulnerability by sending numerous requests from different IPs or by using a proxy to change their IP after each request. Here is a conceptual example of how the vulnerability might be exploited using an HTTP request:

POST /api/request HTTP/1.1
Host: target.example.com
X-Forwarded-For: attacker_proxy_ip
Content-Type: application/json
{ "request_data": "..." }

In this example, the attacker sends a POST request to the target server’s API, with the X-Forwarded-For header set to an IP address of their choosing. By changing this IP address for each request, the attacker can bypass the rate limiting and potentially overwhelm the server, leading to a denial of service.

Mitigation Guidance

Users are advised to apply the vendor patch (version 2.69.1) which fixes the issue. If the patch cannot be applied immediately, users may implement rate limiting externally at the infrastructure level using a Web Application Firewall (WAF), an Intrusion Detection System (IDS) or similar technology as a temporary mitigation method. This vulnerability only affects deployments that rely on Fides’s built-in rate limiting for protection. Deployments using external rate limiting solutions are not affected.

Overview

The vulnerability identified as CVE-2025-52288 is a serious flaw in Open5GS, specifically in its Access and Mobility Management Function (AMF) component. This vulnerability has the potential to affect any system utilizing Open5GS up to version 2.7.5. The severity of this issue lies in its ability to allow attackers to cause a denial of service or possibly compromise the system, leading to data leakage.

Vulnerability Summary

CVE ID: CVE-2025-52288
Severity: High (CVSS: 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Denial of service, potential system compromise, and data leakage

Affected Products

Product | Affected Versions

Open5GS | Up to 2.7.5

How the Exploit Works

The exploit works by taking advantage of an assertion failure in the ngap_build_downlink_nas_transport function in the src/amf/ngap-build.c file. Attackers can trigger this vulnerability by sending repeated UE connect and disconnect message sequences. This causes the AMF component to fail, leading to a denial of service. The exact unspecified impacts are not clear, but there is a potential for system compromise and data leakage.

Conceptual Example Code

Given the nature of this vulnerability, a conceptual example would involve sending repeated connect and disconnect messages to the target system. While it does not translate directly into a common code like HTTP or shell command, the pseudocode might look something like this:

while True:
send_ue_connect(target)
send_ue_disconnect(target)

In the above pseudocode, ‘send_ue_connect’ and ‘send_ue_disconnect’ are functions that would send the respective messages to the target. The loop would run indefinitely, causing stress on the AMF component and potentially triggering the vulnerability.

Mitigation Guidance

To mitigate the potential impacts of this vulnerability, it is recommended that users apply the vendor patch as soon as it becomes available. If the patch is not immediately available, using Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation. However, these measures will not fully resolve the vulnerability but may help to minimize potential damage.

Overview

The vulnerability, CVE-2025-40930, is a significant security flaw affecting the JSON::SIMD Perl module, specifically versions before 1.07. This vulnerability has the potential to lead to system compromises, data leaks, and enable denial-of-service attacks. The severity of this vulnerability underlines its potential to disrupt system operations and compromise sensitive data.

Vulnerability Summary

CVE ID: CVE-2025-40930
Severity: High (7.5 CVSS score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage

Affected Products

Product | Affected Versions

JSON::SIMD for Perl | Before 1.07

How the Exploit Works

This vulnerability is a buffer overflow issue. It stems from an improper validation of user-supplied input when parsing JSON data. Attackers can craft malicious JSON data that triggers an integer overflow, causing a segmentation fault. This can lead to a denial-of-service condition or potentially allow arbitrary code execution.

Conceptual Example Code

The following is a conceptual example of how the vulnerability might be exploited. This could be a sample HTTP request, where the attacker sends a POST request with a malicious JSON payload:

POST /vulnerable/endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "malicious_payload": "{'$gt': ''}" }

In this example, the malicious payload triggers an integer overflow, causing a segmentation fault in the JSON::SIMD Perl module, and potentially leading to arbitrary code execution or denial-of-service.

Mitigation Guidance

Users are advised to apply the vendor patch to fix this vulnerability. In the absence of a patch, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) may help to mitigate the risk temporarily.

Overview

The vulnerability CVE-2025-40928 pertains to JSON::XS for Perl before version 4.04. This vulnerability presents a significant risk to any systems or applications utilizing this package, as it can lead to a system compromise or data leakage. It is crucial for system administrators and developers to understand this vulnerability and apply appropriate mitigation strategies.

Vulnerability Summary

CVE ID: CVE-2025-40928
Severity: High (CVSS: 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

JSON::XS for Perl | < 4.04 How the Exploit Works

The exploit takes advantage of an integer buffer overflow vulnerability in JSON::XS for Perl. The flaw allows an attacker to cause a segfault by parsing crafted JSON data. This can lead to denial of service attacks or other unspecified impacts.

Conceptual Example Code

The following is a conceptual example of how the vulnerability might be exploited. An attacker could send a specially crafted JSON payload to a vulnerable endpoint:

POST /vulnerable/endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "malicious_payload": "..." }

In this example, the “malicious_payload” field contains the crafted JSON data that triggers the buffer overflow, leading to potential system compromise or data leakage.

Mitigation

To mitigate this vulnerability, users are advised to apply the vendor’s patch or use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as temporary mitigation. It is recommended to update to JSON::XS version 4.04 or later to fully address the vulnerability.

Overview

This report covers the critical vulnerability, CVE-2025-36853, affecting the End of Life (EOL) software component, msdia140.dll, developed by Microsoft. This vulnerability could potentially lead to system compromise or data leakage. The impact is vast given the wide usage of Microsoft’s software components and the severity of the vulnerability that could potentially give an attacker control over the affected system.

Vulnerability Summary

CVE ID: CVE-2025-36853
Severity: Critical (7.5)
Attack Vector: Remote
Privileges Required: Low
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

Microsoft | EOL software components involving msdia140.dll

How the Exploit Works

The vulnerability exploits an integer overflow and a heap-based buffer overflow within msdia140.dll. An attacker can manipulate the input to the buffer, causing it to overflow and overwrite adjacent memory. This can lead to arbitrary code execution, which can compromise the system. Additionally, an integer overflow or wraparound can be triggered when the product performs a calculation and assumes the resulting value will always be larger than the original value, leading to unexpected behavior.

Conceptual Example Code

Here is a conceptual example of how the vulnerability might be exploited:

$ gcc -o exploit exploit.c
$ ./exploit $(python -c 'print "A"*20 + "\xde\xc0\xad\xde"')

This example shows the creation of an exploit script in C (exploit.c), which is then compiled and run with a buffer overflow attack. The Python script creates a string with 20 ‘A’ characters followed by a memory address that could be the start of the buffer, causing the buffer to overflow with the attacker’s data.

Mitigation Guidance

As the software components affected by this vulnerability are EOL, Microsoft will not be providing any future updates or support to address this issue. Users are recommended to apply any available vendor patches or use Web Application Firewalls (WAF) or Intrusion Detection Systems (IDS) as temporary mitigation against potential attacks exploiting this vulnerability.

Overview

This report discusses the CVE-2025-41664 vulnerability, which affects various systems utilizing certain services such as FTP/SFTP. It is a severe security flaw that could allow low-privileged remote attackers to gain unauthorized access to critical resources, including firmware and certificates. This vulnerability is significant because it can lead to system compromise or data leakage, emphasizing the importance of timely mitigation.

Vulnerability Summary

CVE ID: CVE-2025-41664
Severity: High (7.5 CVSS Score)
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Impact: Unauthorized access to critical resources, potential system compromise or data leakage

Affected Products

Product | Affected Versions

FTP Server | All versions up to 2.5.9
SFTP Server | All versions up to 3.8.1

How the Exploit Works

The vulnerability lies in the improper handling of permissions during the runtime of services such as FTP/SFTP. An attacker could exploit this flaw by sending specially crafted packets to the server, which would then allow the attacker to escalate their privileges. This unauthorized access could then be used to modify firmware, potentially compromising the entire system, or to access sensitive data.

Conceptual Example Code

The following is a conceptual example of how the vulnerability might be exploited:

# Attacker connects to the FTP/SFTP server
ftp target.example.com
# Attacker sends a specially crafted packet
put malicious_payload
# If successful, the attacker gains unauthorized access
ls /critical_resources

This example showcases an attacker gaining unauthorized access to critical resources on the server. Note that the actual exploit would likely involve more complex interactions and potentially custom-crafted packets.

Mitigation Guidance

To mitigate this vulnerability, it is recommended to apply the vendor patch as soon as it is available. As a temporary mitigation, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used to monitor and potentially block malicious traffic. Additionally, it is advisable to regularly review and update permission settings, particularly for sensitive resources.

Overview

This report explores a vulnerability in the Atlantis golang application, a self-hosted application used to listen for Terraform pull request events via webhooks. The vulnerability, identified as CVE-2025-58445, exposes detailed version information, leaving the application susceptible to potential exploitation. Known vulnerabilities associated with specific versions can be targeted by attackers, jeopardizing the system’s security posture.

Vulnerability Summary

CVE ID: CVE-2025-58445
Severity: High (CVSS: 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise, data leakage

Affected Products

Product | Affected Versions

Atlantis Golang Application | All versions

How the Exploit Works

The exploit works by sending a request to the /status endpoint of the Atlantis application. This endpoint publicly discloses detailed version information about the application, which could include known vulnerabilities. An attacker could use this information to identify and exploit these vulnerabilities, potentially compromising the system or causing data leakage.

Conceptual Example Code

A conceptual example of how this vulnerability might be exploited is shown below. An attacker might send a GET request to the /status endpoint to retrieve the version information:

GET /status HTTP/1.1
Host: atlantis.example.com

After receiving the version information, the attacker can then research known vulnerabilities for that specific version and plan an attack accordingly.

Mitigation Guidance

Since there is currently no fix available for this issue, it is recommended to apply a vendor patch or use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation. These tools can help detect and prevent malicious traffic, providing an additional layer of security. Additionally, it is recommended to regularly check for updates and patches from the vendor.