CVE-2025-6499

low-risk
Published 2025-06-23

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.

Do I need to act?

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0.05% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
3
CVSS 3.3/10 Low
LOCAL / LOW complexity

Affected Products (1)

Libucl

Affected Vendors

Vstakhov

References (6)

Exploit https://github.com/user-attachments/files/19825399/libucl_crash.txt
Exploit https://github.com/vstakhov/libucl/issues/319
Permissions Required https://vuldb.com/?ctiid.313615
Third Party Advisory https://vuldb.com/?id.313615
Third Party Advisory https://vuldb.com/?submit.601011
Exploit https://github.com/vstakhov/libucl/issues/319
18
/ 100
low-risk
Severity 13/34 · Low
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal