CVE-2025-6499
A vulnerability classified as problematic was found in vstakhov libucl up to 0.9.2.
Does this matter?
Lower severity and a low EPSS score (0.26%). Track it; it rarely justifies an emergency change on its own.
Description
A vulnerability classified as problematic was found in vstakhov libucl up to 0.9.2. Affected by this vulnerability is the function ucl_parse_multiline_string of the file src/ucl_parser.c. The manipulation leads to heap-based buffer overflow. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used.
- CVSS 4.0
- 1.9 LOWCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.26% probability · 17th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-119, CWE-122, CWE-787
- Affected
- vstakhov/libucl
- Source
- cna@vuldb.com
EPSS 0.3% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/user-attachments/files/19825399/libucl_crash.txtExploit
- https://github.com/vstakhov/libucl/issues/319Exploit, Issue Tracking
- https://vuldb.com/?ctiid.313615Permissions Required, VDB Entry
- https://vuldb.com/?id.313615Third Party Advisory, VDB Entry
- https://vuldb.com/?submit.601011Third Party Advisory, VDB Entry
- https://github.com/vstakhov/libucl/issues/319Exploit, Issue Tracking
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.