Vulnerability in Wolfssl
CVE-2026-5446
In wolfSSL, ARIA-GCM cipher suites used in TLS 1.2 and DTLS 1.2 reuse an identical 12-byte GCM nonce for every application-data record. Because wc_AriaEncrypt is stateless and passes the caller-supplied IV verbatim to the MagicCrypto SDK with no internal counter, and because the explicit IV is zero-initialized at session setup and never incremented in non-FIPS builds. This vulnerability affects wolfSSL builds configured with --enable-aria and the proprietary MagicCrypto SDK (a non-default, opt-in configuration required for Korean regulatory deployments). AES-GCM is not affected because wc_AesGcmEncrypt_ex maintains an internal invocation counter independently of the call-site guard.
EPSS: 0.003 (18.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N.
Affected products
- Wolfssl — versions 5.2.1
Weakness classification (CWE)
References
- facts@wolfssl.com (Patch, Issue Tracking)
Frequently asked questions
- What is CVE-2026-5446?
- CVE-2026-5446 is a high-severity vulnerability in Wolfssl, classified under Reusing a Nonce, Key Pair in Encryption. CVSS score: 7.1/10. Published 2026-04-09.
- How severe is CVE-2026-5446?
- High severity. CVSS v3 base score is 7.1 out of 10.