CVE-2025-34143
CVE-2025-34143 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.3. Its EPSS exploit-prediction score of 30% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-78.
Key facts
- Severity: Critical (CVSS 4.0 base score 9.3)
- EPSS exploit prediction: 30% (98th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-22321
- Weakness: CWE-78
- Published:
- Last modified:
Description
An authentication bypass vulnerability exists in ETQ Reliance on the CG (legacy) platform. The application allowed login as the privileged internal SYSTEM user by manipulating the username field. The SYSTEM account does not require a password, enabling attackers with network access to the login page to obtain elevated access. Once authenticated, an attacker could achieve remote code execution by modifying Jython scripts within the application. This issue was resolved by introducing stricter validation logic to exclude internal accounts from public authentication workflows in version MP-4583.
Frequently asked questions
- What is CVE-2025-34143?
- An authentication bypass vulnerability exists in ETQ Reliance on the CG (legacy) platform. The application allowed login as the privileged internal SYSTEM user by manipulating the username field. The SYSTEM account does not require a password, enabling attackers with network access to the login page to obtain elevated access. Once authenticated, an attacker could achieve remote code execution by modifying Jython scripts within the application. This issue was resolved by introducing stricter validation logic to exclude internal accounts from public authentication workflows in version MP-4583.
- How severe is CVE-2025-34143?
- CVE-2025-34143 has a CVSS 4.0 base score of 9.3, rated critical severity.
- Is CVE-2025-34143 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 30% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-34143?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2025-34143 have an EU (EUVD) identifier?
- Yes. CVE-2025-34143 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-22321.
- When was CVE-2025-34143 published?
- CVE-2025-34143 was published on 2025-07-22 and last updated on 2026-06-17.
References
- https://slcyber.io/assetnote-security-research-center/how-we-accidentally-discovered-a-remote-code-execution-vulnerability-in-etq-reliance/
- https://www.etq.com/blog/etq-reliance-security-update/
- https://www.etq.com/product-overview/
- https://www.vulncheck.com/advisories/etq-reliance-cg-authentication-bypass-via-trailing-space-rce
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