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.

CVSS v4.0

9.2 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS

0.65% chance of exploitation in the next 30 days, 48th percentile

Published

2025-08-13

Updated

2026-05-15

Proof-of-concept exploits (1)

• https://gist.github.com/Janrdrz/3cf67a9ad488e07ceaacd7c1a7e59ae7

References

• CVE Record
• NVD entry

Related

• CVE-2025-34153
• CVE-2025-34157
• CVE-2025-34152
• CVE-2025-34159
• CVE-2025-34151
• CVE-2025-34160