CVE-2026-55967

HIGH

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 v3.1 Score

7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Published: 6/25/2026Modified: 6/26/2026

Related Intelligence (1)

HIGHVulnerability

NVD HIGH: CVE-2026-55967 — AES-GCM encryption/decryption with extremely large cumulative single message siz...

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.

CVE-2026-55967
NIST NVD

References (2)

https://github.com/wolfSSL/wolfssl/pull/10709Issue TrackingPatchhttps://www.wolfssl.com/docs/security-vulnerabilities/Vendor Advisory