CVE-2026-55967 | AES-GCM encryption/decryption with extremely large cumulativ… | CVSS 2.0 LOW

Description

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.

Metadata

CVE ID: CVE-2026-55967
State: PUBLISHED
Assigner: wolfSSL
Reserved: 2026-06-17 22:11 UTC
Published: 2026-06-25 16:53 UTC
Last updated: 2026-06-25 17:57 UTC
Primary CWE: CWE-323
CWE-323 Reusing a Nonce, Key Pair in Encryption
Vendor / Product: wolfSSL / wolfSSL
Sources: cve.org · NVD

Severity & Metrics

2.0 LOW CVSS 4.0

CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
wolfSSL	wolfSSL	—	4.8.0 ≤ 5.9.1

Weakness (CWE)

CWE	Source	Description
CWE-323	cna	CWE-323 Reusing a Nonce, Key Pair in Encryption

CVSS scores (1)

Score	Severity	Version	Source	Vector
2.0	LOW	4.0	cna	CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

References (2)