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CVE-2025-54530: Privilege Escalation Vulnerability in JetBrains TeamCity

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Overview

A significant vulnerability, CVE-2025-54530, has been identified in JetBrains TeamCity prior to the 2025.07 version. This vulnerability can lead to privilege escalation due to incorrect directory permissions, potentially compromising the system or leading to data leakage. The affected systems are at high risk, emphasizing the need for immediate mitigation and patching.

Vulnerability Summary

CVE ID: CVE-2025-54530
Severity: High (CVSS: 7.5)
Attack Vector: Local
Privileges Required: Low
User Interaction: None
Impact: Successful exploitation could lead to system compromise or data leakage

Affected Products

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Product | Affected Versions

JetBrains TeamCity | Before 2025.07

How the Exploit Works

This vulnerability works by exploiting incorrect directory permissions within JetBrains TeamCity. An attacker with low-level privileges on the system can manipulate these permissions to escalate their privileges, gaining unauthorized access to higher-level operations. This can potentially compromise the entire system or lead to data leakage.

Conceptual Example Code

Here’s a conceptual example demonstrating how this vulnerability might be exploited. This is not actual exploit code, but rather a simplified representation to illustrate the concept:

# Assume attacker has low-level access
$ cd /path/to/vulnerable/directory
$ echo "malicious_code" > vulnerable_file
# Execute the malicious code with escalated privileges
$ sudo ./vulnerable_file

Mitigation Guidance

To mitigate this vulnerability, it is strongly recommended to apply the patch provided by the vendor, JetBrains. This will address the incorrect directory permissions issue. As a temporary mitigation, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can also help to monitor and block malicious activities until the patch is applied.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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