Buffer overflow in Vstakhov Libucl
CVE-2025-6499
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 overflo…
Vulnerability class: Buffer Overflow
EPSS: 0.001 (31.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.3 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Vstakhov Libucl — versions 0.9.0, 0.9.1, 0.9.2
Weakness classification (CWE)
References
- VDB-313615 | vstakhov libucl ucl_parser.c ucl_parse_multiline_string heap-based overflow (technical-description, Third Party Advisory, VDB Entry, vdb-entry)
- VDB-313615 | CTI Indicators (IOB, IOC, IOA) (signature, Permissions Required, permissions-required, VDB Entry)
- Submit #601011 | vstakhov libucl libucl 0.9.2 (commit 3e7f023) Heap-based Buffer Overflow (Third Party Advisory, VDB Entry, third-party-advisory)
- cna@vuldb.com (issue-tracking, Exploit, Issue Tracking)
- cna@vuldb.com (Exploit, exploit)
Frequently asked questions
- What is CVE-2025-6499?
- CVE-2025-6499 is a low-severity vulnerability in Vstakhov Libucl, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 3.3/10. Published 2025-06-23.
- How severe is CVE-2025-6499?
- Low severity. CVSS v3 base score is 3.3 out of 10.