CVE-2025-11931

Integer Underflow Leads to Out-of-Bounds Access in XChaCha20-Poly1305 Decrypt. This issue is hit specifically with a call to the function wcXChaCha20Poly1305Decrypt which is not used with TLS connections, only from direct calls from an application...

EUVD-2025-198522

Integer Underflow Leads to Out-of-Bounds Access in XChaCha20-Poly1305 Decrypt. This issue is hit specifically with a call to the function wcXChaCha20Poly1305Decrypt which is not used with TLS connections, only from direct calls from an application...

CVE-2025-11931

Integer Underflow Leads to Out-of-Bounds Access in XChaCha20-Poly1305 Decrypt. This issue is hit specifically with a call to the function wcXChaCha20Poly1305Decrypt which is not used with TLS connections, only from direct calls from an application...

CVE-2025-11931

The set of connected documents confirms this CVE affects wolfSSL’s XChaCha20-Poly1305 code, specifically the wc_XChaCha20Poly1305_Decrypt() function. The root cause is an integer underflow that can lead to out-of-bounds access when decrypting, and this path is taken from direct application calls ...