Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

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 overflow. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:83fbd61cbf72cdc4815941adf822de75862b09770ba45b1450c1c0df965d88dc
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 4 assertions

{"metric":{"baseScore":1.7,"vectorString":"AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:459b05f80a3d369f90c973df960d0a660696148cc3c8a990ebdb17db7953c563 · sha256:4ef19657d6cb4784… · /containers/cna/metrics/3/cvssV2_0

{"metric":{"baseScore":3.3,"baseSeverity":"LOW","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:459b05f80a3d369f90c973df960d0a660696148cc3c8a990ebdb17db7953c563 · sha256:4ef19657d6cb4784… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"baseScore":3.3,"baseSeverity":"LOW","vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:459b05f80a3d369f90c973df960d0a660696148cc3c8a990ebdb17db7953c563 · sha256:4ef19657d6cb4784… · /containers/cna/metrics/2/cvssV3_0

{"metric":{"baseScore":4.8,"baseSeverity":"MEDIUM","vectorString":"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","version":"4.0"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:459b05f80a3d369f90c973df960d0a660696148cc3c8a990ebdb17db7953c563 · sha256:4ef19657d6cb4784… · /containers/cna/metrics/0/cvssV4_0
cwe · 2 assertions

{"cweId":"CWE-119","description":"Memory Corruption","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:459b05f80a3d369f90c973df960d0a660696148cc3c8a990ebdb17db7953c563 · sha256:4ef19657d6cb4784… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-122","description":"Heap-based Buffer Overflow","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:459b05f80a3d369f90c973df960d0a660696148cc3c8a990ebdb17db7953c563 · sha256:4ef19657d6cb4784… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"libucl","vendor":"vstakhov","versions":[{"status":"affected","version":"0.9.0"},{"status":"affected","version":"0.9.1"},{"status":"affected","version":"0.9.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:459b05f80a3d369f90c973df960d0a660696148cc3c8a990ebdb17db7953c563 · sha256:4ef19657d6cb4784… · /containers/cna/affected/0

Provider-owned CVSS observations

4 source assertions
{"metric":{"baseScore":1.7,"vectorString":"AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:459b05f80a3d369f90c973df960d0a660696148cc3c8a990ebdb17db7953c563 · sha256:4ef19657d6cb4784… · /containers/cna/metrics/3/cvssV2_0
{"metric":{"baseScore":3.3,"baseSeverity":"LOW","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:459b05f80a3d369f90c973df960d0a660696148cc3c8a990ebdb17db7953c563 · sha256:4ef19657d6cb4784… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"baseScore":3.3,"baseSeverity":"LOW","vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:459b05f80a3d369f90c973df960d0a660696148cc3c8a990ebdb17db7953c563 · sha256:4ef19657d6cb4784… · /containers/cna/metrics/2/cvssV3_0
{"metric":{"baseScore":4.8,"baseSeverity":"MEDIUM","vectorString":"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","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:459b05f80a3d369f90c973df960d0a660696148cc3c8a990ebdb17db7953c563 · sha256:4ef19657d6cb4784… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-119","description":"Memory Corruption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:459b05f80a3d369f90c973df960d0a660696148cc3c8a990ebdb17db7953c563 · sha256:4ef19657d6cb4784… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-122","description":"Heap-based Buffer Overflow","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:459b05f80a3d369f90c973df960d0a660696148cc3c8a990ebdb17db7953c563 · sha256:4ef19657d6cb4784… · /containers/cna/problemTypes/0/descriptions/0

Source references

6 source assertions
{"tags":["exploit"],"url":"https://github.com/user-attachments/files/19825399/libucl_crash.txt"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:459b05f80a3d369f90c973df960d0a660696148cc3c8a990ebdb17db7953c563 · sha256:4ef19657d6cb4784… · /containers/cna/references/4
{"tags":["issue-tracking"],"url":"https://github.com/vstakhov/libucl/issues/319"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:459b05f80a3d369f90c973df960d0a660696148cc3c8a990ebdb17db7953c563 · sha256:4ef19657d6cb4784… · /containers/cna/references/3
{"tags":["exploit"],"url":"https://github.com/vstakhov/libucl/issues/319"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:459b05f80a3d369f90c973df960d0a660696148cc3c8a990ebdb17db7953c563 · sha256:4ef19657d6cb4784… · /containers/adp/0/references/0
{"name":"VDB-313615 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"],"url":"https://vuldb.com/?ctiid.313615"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:459b05f80a3d369f90c973df960d0a660696148cc3c8a990ebdb17db7953c563 · sha256:4ef19657d6cb4784… · /containers/cna/references/1
{"name":"VDB-313615 | vstakhov libucl ucl_parser.c ucl_parse_multiline_string heap-based overflow","tags":["vdb-entry","technical-description"],"url":"https://vuldb.com/?id.313615"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:459b05f80a3d369f90c973df960d0a660696148cc3c8a990ebdb17db7953c563 · sha256:4ef19657d6cb4784… · /containers/cna/references/0
{"name":"Submit #601011 | vstakhov libucl libucl 0.9.2 (commit 3e7f023) Heap-based Buffer Overflow","tags":["third-party-advisory"],"url":"https://vuldb.com/?submit.601011"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:459b05f80a3d369f90c973df960d0a660696148cc3c8a990ebdb17db7953c563 · sha256:4ef19657d6cb4784… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

← Back to CVE Explorer