Vulnerability DatabaseCVE-2025-6499
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CVE-2025-6499
June 23, 2025
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.
Related Resources (5)
https://vuldb.com/?submit.601011
https://vuldb.com/?ctiid.313615
https://github.com/user-attachments/files/19825399/libucl_crash.txt
https://vuldb.com/?id.313615
https://github.com/vstakhov/libucl/issues/319
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CVSS v4
Base Score:
7.3
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
Exploit Maturity
POC
CVSS v3
Base Score:
8.4
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Exploit Maturity
PROOF-OF-CONCEPT
Weakness Type (CWE)
Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-119
Heap-based Buffer Overflow
CWE-122
Out-of-bounds Write
CWE-787
EPSS
Base Score:
0.03