PT-2026-26313 · Wolfssl · Wolfssl

Prasanth Sundararajan · Published 2026-03-19 · Updated 2026-03-19 · CVE-2026-1005

Mitre

CVSS v4.0

2.1

Low

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

Integer underflow in wolfSSL packet sniffer <= 5.8.4 allows an attacker to cause a buffer overflow in the AEAD decryption path by injecting a TLS record shorter than the explicit IV plus authentication tag into traffic inspected by ssl DecodePacket. The underflow wraps a 16-bit length to a large value that is passed to AEAD decryption routines, causing heap buffer overflow and a crash. An unauthenticated attacker can trigger this remotely via malformed TLS Application Data records.

Fix

Integer Underflow

Weakness Enumeration

CWE-191

Related Identifiers

CVE-2026-1005

Affected Products

Wolfssl

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-1005 · Security Note
• https://github.com/wolfSSL/wolfssl/pull/9571 · Note