CVE Explorer
CVE-2026-39856
osslsigncode is a tool that implements Authenticode signing and timestamping. Prior to 2.13, an out-of-bounds read vulnerability exists in osslsigncode version 2.12 and earlier in the PE page-hash computation code (pe_page_hash_calc()). When processing PE sections for page hashing, the function uses PointerToRawData and SizeOfRawData values from section headers without validating that the referenced region lies within the mapped file. An attacker can craft a PE file with section headers that poi
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"osslsigncode","vendor":"mtrojnar","versions":[{"status":"affected","version":"< 2.13"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:3dc5be54a18c4fd0501df339649f5aa77cee719a104fb73a2daa2396f2d78647 · sha256:f9b00d0b90da3fb8… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:3dc5be54a18c4fd0501df339649f5aa77cee719a104fb73a2daa2396f2d78647 · sha256:f9b00d0b90da3fb8… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:3dc5be54a18c4fd0501df339649f5aa77cee719a104fb73a2daa2396f2d78647 · sha256:f9b00d0b90da3fb8… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"name":"https://github.com/mtrojnar/osslsigncode/commit/92f8761b4770f76a36731969b5040ce3b9a09570","tags":["x_refsource_MISC"],"url":"https://github.com/mtrojnar/osslsigncode/commit/92f8761b4770f76a36731969b5040ce3b9a09570"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:3dc5be54a18c4fd0501df339649f5aa77cee719a104fb73a2daa2396f2d78647 · sha256:f9b00d0b90da3fb8… · /containers/cna/references/1
{"name":"https://github.com/mtrojnar/osslsigncode/releases/tag/2.13","tags":["x_refsource_MISC"],"url":"https://github.com/mtrojnar/osslsigncode/releases/tag/2.13"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:3dc5be54a18c4fd0501df339649f5aa77cee719a104fb73a2daa2396f2d78647 · sha256:f9b00d0b90da3fb8… · /containers/cna/references/2
{"name":"https://github.com/mtrojnar/osslsigncode/security/advisories/GHSA-rjrx-chvw-8jw8","tags":["x_refsource_CONFIRM"],"url":"https://github.com/mtrojnar/osslsigncode/security/advisories/GHSA-rjrx-chvw-8jw8"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:3dc5be54a18c4fd0501df339649f5aa77cee719a104fb73a2daa2396f2d78647 · sha256:f9b00d0b90da3fb8… · /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.