CVE-2025-6499
Last modified
CVE-2025-6499 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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. EPSS estimates a 0.21% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS: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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Vstakhov | Libucl | <= 0.9.2 |
References
- 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
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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