Cyber Resilience

CVE-2026-55967

Low

Published: 25 June 2026

Published
25 June 2026
Modified
26 June 2026
KEV Added
—
Patch
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CVSS Score v4 2.0 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0011 1.8th percentile
Risk Priority 15 floored blend · peak EPSS

Summary

CVE-2026-55967 is a low-severity Reusing a Nonce, Key Pair in Encryption (CWE-323) vulnerability in Wolfssl Wolfssl. Its CVSS base score is 2.0 (Low).

Operationally, ranked at the 1.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

A04:2025 Cryptographic Failures

EU & UK References

Vulnerability details

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.

CWE(s)
CWE-323

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

Insufficient information to map techniques.
Confidence: LOW · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2025-7396Same product: Wolfssl Wolfssl
CVE-2024-1544Same product: Wolfssl Wolfssl
CVE-2026-6331Same product: Wolfssl Wolfssl
CVE-2026-6450Same product: Wolfssl Wolfssl
CVE-2026-5503Same product: Wolfssl Wolfssl
CVE-2021-3336Same product: Wolfssl Wolfssl
CVE-2026-55960Same product: Wolfssl Wolfssl
CVE-2025-7394Same product: Wolfssl Wolfssl
CVE-2026-7532Same product: Wolfssl Wolfssl
CVE-2022-34293Same product: Wolfssl Wolfssl

Affected Assets

wolfssl
wolfssl
4.8.0 — 5.9.2

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References