CVE-2026-5446 wolfSSL ARIA-GCM TLS 1.2/DTLS 1.2 GCM nonce reuse
wolfSSL reuses GCM nonces in ARIA-GCM TLS/DTLS connections, potentially allowing attackers to decrypt traffic or forge messages.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-5446?
CVE-2026-5446 is a medium-severity vulnerability in Wolfssl Wolfssl, published on 9 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-323
Which versions are affected by CVE-2026-5446?
It affects 1 product.
Products include Wolfssl Wolfssl.
How do I fix CVE-2026-5446?
Apply the vendor's patch.
Is CVE-2026-5446 being exploited?
There is no known exploitation of CVE-2026-5446 in the wild and no public exploit code.
Other vulnerabilities in Wolfssl Wolfssl
Sources
Also known as DEBIAN-CVE-2026-5446, GHSA-vgv9-mv66-mpc7, JLSEC-2026-722, UBUNTU-CVE-2026-5446.