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CVE-2026-3548

Two buffer overflow vulnerabilities existed in the wolfSSL CRL parser when parsing CRL numbers: a heap-based buffer overflow could occur when improperly storing the CRL number as a hexadecimal string, and a stack-based overflow for sufficiently sized CRL numbers. With appropriately crafted CRLs, either of these out of bound writes could be triggered. Note this only affects builds that specifically enable CRL support, and the user would need to load a CRL from an untrusted source.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:8d035bc978e6a21ab57abe7dbee3556b862b0eef4a1e05143b4d03b6e06807fb
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-122","description":"CWE-122 Heap-based Buffer Overflow","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b88e57c63f0656fa8fb243ce58e023902588585000eed2521962cbb6299f82bf · sha256:a1af1260f8a6dfb3… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-787","description":"CWE-787 Out-of-bounds Write","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b88e57c63f0656fa8fb243ce58e023902588585000eed2521962cbb6299f82bf · sha256:a1af1260f8a6dfb3… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"collectionURL":"https://www.wolfssl.com/download/","defaultStatus":"unaffected","modules":["wolfSSL"],"packageName":"wolfSSL","platforms":["MacOS","Linux","Windows"],"product":"wolfSSL","programFiles":["wolfcrypt/src/asn.c"],"programRoutines":[{"name":"ParseCRL()"},{"name":"ParseCRL_Extensions()"}],"repo":"https://github.com/wolfSSL/wolfssl","vendor":"wolfSSL","versions":[{"lessThan":"5.9.0","status":"affected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b88e57c63f0656fa8fb243ce58e023902588585000eed2521962cbb6299f82bf · sha256:a1af1260f8a6dfb3… · /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":"NETWORK","baseScore":7.2,"baseSeverity":"HIGH","exploitMaturity":"UNREPORTED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImp…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:b88e57c63f0656fa8fb243ce58e023902588585000eed2521962cbb6299f82bf · sha256:a1af1260f8a6dfb3… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-122","description":"CWE-122 Heap-based Buffer Overflow","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b88e57c63f0656fa8fb243ce58e023902588585000eed2521962cbb6299f82bf · sha256:a1af1260f8a6dfb3… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-787","description":"CWE-787 Out-of-bounds Write","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b88e57c63f0656fa8fb243ce58e023902588585000eed2521962cbb6299f82bf · sha256:a1af1260f8a6dfb3… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"url":"https://github.com/wolfSSL/wolfssl/pull/9628/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b88e57c63f0656fa8fb243ce58e023902588585000eed2521962cbb6299f82bf · sha256:a1af1260f8a6dfb3… · /containers/cna/references/0
{"url":"https://github.com/wolfSSL/wolfssl/pull/9873/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b88e57c63f0656fa8fb243ce58e023902588585000eed2521962cbb6299f82bf · sha256:a1af1260f8a6dfb3… · /containers/cna/references/1

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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