CVE-2026-1005: Integer underflow leads to out-of-bounds access in sniffer AES-GCM/CCM/ARIA-GCM decrypt path

Published Mar 19, 2026
·
Updated

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

2 affected components
wolfSSL wolfSSL packet sniffer<=5.8.4
wolfSSL wolfssl<=5.8.4

Event History

Mar 19, 2026
CVE Published
via MITRE·05:00 PM
Data Sourced
via MITRE·05:00 PM
DescriptionWeakness
Data Sourced
via NVD·05:16 PM
RemedyDescriptionSeverityWeaknessAffected Software
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Frequently Asked Questions

1

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.

2

How do I fix CVE-2026-1005?

To fix CVE-2026-1005, upgrade wolfSSL packet sniffer to version 5.8.5 or later.

3

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.

4

Which software versions are affected by CVE-2026-1005?

CVE-2026-1005 affects wolfSSL packet sniffer versions up to and including 5.8.4.

5

What type of vulnerability is CVE-2026-1005?

CVE-2026-1005 is classified as an integer underflow vulnerability.

Contact

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