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CVE-2026-5448

X.509 date buffer overflow in wolfSSL_X509_notAfter / wolfSSL_X509_notBefore. A buffer overflow may occur when parsing date fields from a crafted X.509 certificate via the compatibility layer API. This is only triggered when calling these two APIs directly from an application, and does not affect TLS or certificate verify operations in wolfSSL.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:04b23ecccd2323bf8fd973f9b93e076709c4733c7ffee4907c4fefeed544e4fe
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","product":"wolfSSL","repo":"https://github.com/wolfSSL/wolfssl","vendor":"wolfSSL","versions":[{"lessThan":"5.9.1","status":"affected","version":"0","versionType":"server"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:46b0efa63aa2b9a813267a1fa01468bc43145acbb5cbd1130473d8495e949022 · sha256:afa03552753a8b20… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"ADJACENT","baseScore":2.3,"baseSeverity":"LOW","exploitMaturity":"NOT_DEFINED","privilegesRequired":"NONE","providerUrgency":"GREEN","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/U:Green","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpac…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:46b0efa63aa2b9a813267a1fa01468bc43145acbb5cbd1130473d8495e949022 · sha256:afa03552753a8b20… · /containers/cna/metrics/0/cvssV4_0

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:v2:46b0efa63aa2b9a813267a1fa01468bc43145acbb5cbd1130473d8495e949022 · sha256:afa03552753a8b20… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"url":"https://github.com/wolfSSL/wolfssl/pull/10071"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:46b0efa63aa2b9a813267a1fa01468bc43145acbb5cbd1130473d8495e949022 · sha256:afa03552753a8b20… · /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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