CVE-2026-5778
Integer underflow in wolfSSL packet sniffer <= 5.9.0 allows an attacker to cause a program crash 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 a large out-of-bounds read and crash. An unauthenticated attacker can trigger this remotely via malformed TLS Application Data records.
- Score
- CVSS 3.1 6.5 Medium
- Status
- Analyzed - facts@wolfssl.com
- Published
- 2026-04-09
- Last modified
- 2026-04-10
- Weaknesses
- CWE-191
Affected products
References
- https://github.com/wolfSSL/wolfssl/pull/10125
