CVE-2026-55967

AES-GCM encryption/decryption with extremely large cumulative single message sizes (>64 GiB) were not properly rejected by the streaming APIs, allowing counter wrap, keystream reuse, and consequent plaintext recovery.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/wolfSSL/wolfssl/pull/10709	Issue Tracking Patch
https://www.wolfssl.com/docs/security-vulnerabilities/	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*

History

24 Oct 2026, 13:10

Type	Values Removed	Values Added
Summary		(es) El cifrado/descifrado AES-GCM con tamaños de mensaje único acumulativos extremadamente grandes (>64 GiB) no fue rechazado correctamente por las API de streaming, permitiendo el desbordamiento del contador, la reutilización de la secuencia de claves y la consiguiente recuperación del texto sin cifrar.

Information

Published : 2026-06-25 18:16

Updated : 2026-10-24 13:10

NVD link : CVE-2026-55967

Mitre link : CVE-2026-55967

CVE.ORG link : CVE-2026-55967

JSON object : View

Products Affected

wolfssl

wolfssl

CWE

CWE-323

Reusing a Nonce, Key Pair in Encryption

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