CVE-2026-3548
criticalpriority · track · 39EPSS 0.005 · 42 %ileEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.2–9.8
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (7)
External citations — patches, advisories, analysis.
- https://github.com/wolfSSL/wolfssl/pull/9628/cnnvd
- https://github.com/wolfSSL/wolfssl/pull/9873/cnnvd
- https://github.com/wolfSSL/wolfssl/releasesPatchcnnvd
- https://github.com/wolfSSL/wolfssl/pull/9628/enisa_euvd
- https://github.com/wolfSSL/wolfssl/pull/9873/enisa_euvd
- https://github.com/wolfSSL/wolfssl/pull/9628/Issue TrackingPatchnvd
- https://github.com/wolfSSL/wolfssl/pull/9873/ExploitIssue TrackingPatchnvd
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