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CVE-2025-67896

Exim before 4.99.1, with certain non-default rate-limit configurations, allows a remote heap-based buffer overflow because database records are cast directly to internal structures without validation.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:41330cc1ec23a495f489c97305b62945c828c86f50daf3341450da6149060ed6
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unknown","product":"Exim","vendor":"Exim","versions":[{"lessThan":"4.99.1","status":"affected","version":"4.99","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8deb024690f36cc381fb2fa220a1961f945a660b14e58d7134ac255b1290dd6d · sha256:3dfba03e376482e0… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8deb024690f36cc381fb2fa220a1961f945a660b14e58d7134ac255b1290dd6d · sha256:3dfba03e376482e0… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-122","description":"CWE-122 Heap-based Buffer Overflow","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8deb024690f36cc381fb2fa220a1961f945a660b14e58d7134ac255b1290dd6d · sha256:3dfba03e376482e0… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"url":"http://www.openwall.com/lists/oss-security/2025/12/14/1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8deb024690f36cc381fb2fa220a1961f945a660b14e58d7134ac255b1290dd6d · sha256:3dfba03e376482e0… · /containers/adp/0/references/0
{"url":"http://www.openwall.com/lists/oss-security/2025/12/18/3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8deb024690f36cc381fb2fa220a1961f945a660b14e58d7134ac255b1290dd6d · sha256:3dfba03e376482e0… · /containers/adp/0/references/1
{"url":"https://exim.org/static/doc/security/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8deb024690f36cc381fb2fa220a1961f945a660b14e58d7134ac255b1290dd6d · sha256:3dfba03e376482e0… · /containers/cna/references/1
{"url":"https://exim.org/static/doc/security/EXIM-Security-2025-12-09.1/report.txt"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8deb024690f36cc381fb2fa220a1961f945a660b14e58d7134ac255b1290dd6d · sha256:3dfba03e376482e0… · /containers/cna/references/2
{"url":"https://www.openwall.com/lists/oss-security/2025/12/11/2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8deb024690f36cc381fb2fa220a1961f945a660b14e58d7134ac255b1290dd6d · sha256:3dfba03e376482e0… · /containers/cna/references/0

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.

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