CVE Explorer
CVE-2026-9076
Issue summary: When CMS password-based decryption (RFC 3211 / PWRI key unwrap)
processes attacker-supplied CMS data, an attacker-chosen stream-mode KEK
cipher can trigger a heap out-of-bounds read in kek_unwrap_key().
Impact summary: A heap buffer over-read may trigger a crash which leads to
Denial of Service for an application if the input buffer ends at a memory
page boundary and the following page is unmapped. There is no information
disclosure as the over-read bytes are not revealed to the
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unaffected","product":"OpenSSL","vendor":"OpenSSL","versions":[{"lessThan":"4.0.1","status":"affected","version":"4.0.0","versionType":"semver"},{"lessThan":"3.6.3","status":"affected","version":"3.6.0","versionType":"semver"},{"lessThan":"3.5.7","status":"affected","version":"3.5.0","versionType":"semver"},{"lessThan":"3.4.6","status":"affected","version":"3.4.0","versionType":"semver"},{"lessThan":"3.0.21","status":"affected","version":"3.0.0","versionType":"semver"},{"lessThan":"1.1.1zh","status":"affected","version":"1.1.1","versionType":"custom"},{"lessThan":"1.0.2zq","s…
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:5ebe791afc4d1137daf6a85df3753f3b03c51a0467b873189b42f20632111e5d · sha256:d4bb37e9c23dac78… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:5ebe791afc4d1137daf6a85df3753f3b03c51a0467b873189b42f20632111e5d · sha256:d4bb37e9c23dac78… · /containers/adp/0/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:v2:5ebe791afc4d1137daf6a85df3753f3b03c51a0467b873189b42f20632111e5d · sha256:d4bb37e9c23dac78… · /containers/cna/problemTypes/0/descriptions/0
Source references
6 source assertions{"name":"3.4.6 git commit","tags":["patch"],"url":"https://github.com/openssl/openssl/commit/05b066366842f930fadd9a6e94df98030af431bb"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5ebe791afc4d1137daf6a85df3753f3b03c51a0467b873189b42f20632111e5d · sha256:d4bb37e9c23dac78… · /containers/cna/references/4
{"name":"4.0.1 git commit","tags":["patch"],"url":"https://github.com/openssl/openssl/commit/3d8d5bc1056b2f62da9fede23fedbf47e85187b0"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5ebe791afc4d1137daf6a85df3753f3b03c51a0467b873189b42f20632111e5d · sha256:d4bb37e9c23dac78… · /containers/cna/references/1
{"name":"3.5.7 git commit","tags":["patch"],"url":"https://github.com/openssl/openssl/commit/715349a1d7c6db970e6815dafb90915f07307f98"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5ebe791afc4d1137daf6a85df3753f3b03c51a0467b873189b42f20632111e5d · sha256:d4bb37e9c23dac78… · /containers/cna/references/3
{"name":"3.6.3 git commit","tags":["patch"],"url":"https://github.com/openssl/openssl/commit/77bf00ab13f6ff5e516535432f0328ed70ec0c26"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5ebe791afc4d1137daf6a85df3753f3b03c51a0467b873189b42f20632111e5d · sha256:d4bb37e9c23dac78… · /containers/cna/references/2
{"name":"3.0.21 git commit","tags":["patch"],"url":"https://github.com/openssl/openssl/commit/eecbe330977e8d023aae1ca2d9bdbe983ef3fdc6"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5ebe791afc4d1137daf6a85df3753f3b03c51a0467b873189b42f20632111e5d · sha256:d4bb37e9c23dac78… · /containers/cna/references/5
{"name":"OpenSSL Advisory","tags":["vendor-advisory"],"url":"https://openssl-library.org/news/secadv/20260609.txt"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5ebe791afc4d1137daf6a85df3753f3b03c51a0467b873189b42f20632111e5d · sha256:d4bb37e9c23dac78… · /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.