CVE-2019-15651

9.8 criticalEPSS 1.0%

Critical (9.8) in wolfssl wolfssl. EPSS 1.0% chance of exploitation in the next 30 days.

wolfSSL 4.1.0 has a one-byte heap-based buffer over-read in DecodeCertExtensions in wolfcrypt/src/asn.c because reading the ASN_BOOLEAN byte is mishandled for a crafted DER certificate in GetLength_ex.

Severity

CVSS 3.0

9.8 critical

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 1.0% chance of exploitation in the next 30 days; higher than 63% of CVEs (scores of 2026-10-31)
CWE: CWE-125
Published: 2019-08-26
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

wolfssl:wolfssl

References

https://github.com/wolfSSL/wolfssl/issues/2421
https://github.com/wolfSSL/wolfssl/issues/2421

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