CVE-2026-1005: Integer underflow leads to out-of-bounds access in sniffer AES-GCM/CCM/ARIA-GCM decrypt path
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 sslDecodePacket. 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.
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2026-1005?
CVE-2026-1005 has a high severity due to its potential to allow an attacker to cause a buffer overflow.
How do I fix CVE-2026-1005?
To fix CVE-2026-1005, upgrade wolfSSL packet sniffer to version 5.8.5 or later.
What is the impact of CVE-2026-1005?
CVE-2026-1005 allows attackers to perform out-of-bounds access which can lead to arbitrary code execution.
Which software versions are affected by CVE-2026-1005?
CVE-2026-1005 affects wolfSSL packet sniffer versions up to and including 5.8.4.
What type of vulnerability is CVE-2026-1005?
CVE-2026-1005 is classified as an integer underflow vulnerability.