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CVE-2026-31789

Issue summary: Converting an excessively large OCTET STRING value to a hexadecimal string leads to a heap buffer overflow on 32 bit platforms. Impact summary: A heap buffer overflow may lead to a crash or possibly an attacker controlled code execution or other undefined behavior. If an attacker can supply a crafted X.509 certificate with an excessively large OCTET STRING value in extensions such as the Subject Key Identifier (SKID) or Authority Key Identifier (AKID) which are being converted t
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:3839e81b82eaa5ff434ad4af902b247c4067e5c15d708bac488ae91ad37d3c8a
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"OpenSSL","vendor":"OpenSSL","versions":[{"lessThan":"3.6.2","status":"affected","version":"3.6.0","versionType":"semver"},{"lessThan":"3.5.6","status":"affected","version":"3.5.0","versionType":"semver"},{"lessThan":"3.4.5","status":"affected","version":"3.4.0","versionType":"semver"},{"lessThan":"3.3.7","status":"affected","version":"3.3.0","versionType":"semver"},{"lessThan":"3.0.20","status":"affected","version":"3.0.0","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:07bc71456138ea55a8e300f10c958ab2fb0885481d092f9abe35913345e626ce · sha256:58f68fd00d939a24… · /containers/cna/affected/0

{"defaultStatus":"unknown","product":"SIMATIC CN 4100","vendor":"Siemens","versions":[{"lessThan":"V5.0","status":"affected","version":"0","versionType":"custom"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:07bc71456138ea55a8e300f10c958ab2fb0885481d092f9abe35913345e626ce · sha256:58f68fd00d939a24… · /containers/adp/1/affected/0

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"OpenSSL","vendor":"OpenSSL","versions":[{"lessThan":"3.6.2","status":"affected","version":"3.6.0","versionType":"semver"},{"lessThan":"3.5.6","status":"affected","version":"3.5.0","versionType":"semver"},{"lessThan":"3.4.5","status":"affected","version":"3.4.0","versionType":"semver"},{"lessThan":"3.3.7","status":"affected","version":"3.3.0","versionType":"semver"},{"lessThan":"3.0.20","status":"affected","version":"3.0.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:07bc71456138ea55a8e300f10c958ab2fb0885481d092f9abe35913345e626ce · sha256:58f68fd00d939a24… · /containers/cna/affected/0
{"defaultStatus":"unknown","product":"SIMATIC CN 4100","vendor":"Siemens","versions":[{"lessThan":"V5.0","status":"affected","version":"0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:07bc71456138ea55a8e300f10c958ab2fb0885481d092f9abe35913345e626ce · sha256:58f68fd00d939a24… · /containers/adp/1/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":5.8,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:07bc71456138ea55a8e300f10c958ab2fb0885481d092f9abe35913345e626ce · sha256:58f68fd00d939a24… · /containers/adp/0/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-787","description":"CWE-787 Out-of-bounds Write","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:07bc71456138ea55a8e300f10c958ab2fb0885481d092f9abe35913345e626ce · sha256:58f68fd00d939a24… · /containers/cna/problemTypes/0/descriptions/0

Source references

7 source assertions
{"url":"https://cert-portal.siemens.com/productcert/html/ssa-032379.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:07bc71456138ea55a8e300f10c958ab2fb0885481d092f9abe35913345e626ce · sha256:58f68fd00d939a24… · /containers/adp/1/references/0
{"name":"3.4.5 git commit","tags":["patch"],"url":"https://github.com/openssl/openssl/commit/364f095b80601db632b0def6a33316967f863bde"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:07bc71456138ea55a8e300f10c958ab2fb0885481d092f9abe35913345e626ce · sha256:58f68fd00d939a24… · /containers/cna/references/3
{"name":"3.3.7 git commit","tags":["patch"],"url":"https://github.com/openssl/openssl/commit/7a9087efd769f362ad9c0e30c7baaa6bbfa65ecf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:07bc71456138ea55a8e300f10c958ab2fb0885481d092f9abe35913345e626ce · sha256:58f68fd00d939a24… · /containers/cna/references/4
{"name":"3.5.6 git commit","tags":["patch"],"url":"https://github.com/openssl/openssl/commit/945b935ac66cc7f1a41f1b849c7c25adb5351f49"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:07bc71456138ea55a8e300f10c958ab2fb0885481d092f9abe35913345e626ce · sha256:58f68fd00d939a24… · /containers/cna/references/2
{"name":"3.6.2 git commit","tags":["patch"],"url":"https://github.com/openssl/openssl/commit/a24216018e1ede8ff01a4ff5afff7dfbd443e2f9"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:07bc71456138ea55a8e300f10c958ab2fb0885481d092f9abe35913345e626ce · sha256:58f68fd00d939a24… · /containers/cna/references/1
{"name":"3.0.20 git commit","tags":["patch"],"url":"https://github.com/openssl/openssl/commit/a91e537d16d74050dbde50bb0dfb1fe9930f0521"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:07bc71456138ea55a8e300f10c958ab2fb0885481d092f9abe35913345e626ce · sha256:58f68fd00d939a24… · /containers/cna/references/5
{"name":"OpenSSL Advisory","tags":["vendor-advisory"],"url":"https://openssl-library.org/news/secadv/20260407.txt"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:07bc71456138ea55a8e300f10c958ab2fb0885481d092f9abe35913345e626ce · sha256:58f68fd00d939a24… · /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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