CVE-2025-34154
CVE-2025-34154 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-22.
Key facts
- Severity: Critical (CVSS 4.0 base score 9.2)
- EPSS exploit prediction: 1% (52nd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-24643
- Weakness: CWE-22
- Published:
- Last modified:
Description
UnForm Server Manager versions prior to 10.1.12 expose an unauthenticated file read vulnerability via its log file analysis interface. The flaw resides in the arc endpoint, which accepts a fl parameter to specify the log file to be opened. Due to insufficient input validation and lack of path sanitization, attackers can supply relative paths to access arbitrary files on the host system — including sensitive OS-level files — without authentication.
Frequently asked questions
- What is CVE-2025-34154?
- UnForm Server Manager versions prior to 10.1.12 expose an unauthenticated file read vulnerability via its log file analysis interface. The flaw resides in the arc endpoint, which accepts a fl parameter to specify the log file to be opened. Due to insufficient input validation and lack of path sanitization, attackers can supply relative paths to access arbitrary files on the host system — including sensitive OS-level files — without authentication.
- How severe is CVE-2025-34154?
- CVE-2025-34154 has a CVSS 4.0 base score of 9.2, rated critical severity.
- Is CVE-2025-34154 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-34154?
- 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-2025-34154 have an EU (EUVD) identifier?
- Yes. CVE-2025-34154 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-24643.
- When was CVE-2025-34154 published?
- CVE-2025-34154 was published on 2025-08-13 and last updated on 2026-06-17.
References
- https://gist.github.com/Janrdrz/3cf67a9ad488e07ceaacd7c1a7e59ae7
- https://synergetic-data.com/
- https://unform.com/download/uf101_readme.txt
- https://www.vulncheck.com/advisories/unform-server-manager-unauthenticated-arbitrary-file-read
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