CVE-2026-5446
wolfSSL ARIA-GCM TLS 1.2/DTLS 1.2 GCM nonce reuse
- State
- Published
- Severity
- 6.0 Medium
- Published
- Apr 9, 2026
- Updated
- Apr 10, 2026
- Reserved
- Apr 2, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.0 Medium | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N | wolfSSL |
Weaknesses
- CWE-323 Reusing a Nonce, Key Pair in Encryption
Affected Products
| Product | Versions |
|---|---|
wolfSSLwolfSSL |
|
References
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