PT-2026-26327 · Wolfssl · Wolfssl

Published 2026-03-19 · Updated 2026-03-19 · CVE-2026-3548

Mitre

CVSS v4.0

7.2

High

AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U

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.

Fix

Heap Based Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-122

CWE-787

Related Identifiers

CVE-2026-3548

Affected Products

Wolfssl

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-3548 · Security Note
• https://github.com/wolfSSL/wolfssl/pull/9628 · Note
• https://github.com/wolfSSL/wolfssl/pull/9873 · Note