CVE-2025-11931: low-severity vulnerability in wolfSSL
Integer Underflow Leads to Out-of-Bounds Access in XChaCha20-Poly1305 Decrypt
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 2.1epss 0.3%
Integer Underflow Leads to Out-of-Bounds Access in XChaCha20-Poly1305 Decrypt. This issue is hit specifically with a call to the function wc_XChaCha20Poly1305_Decrypt() which is not used with TLS connections, only from direct calls from an application.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Affected products
wolfSSL · wolfSSLRelated CVEs — wolfSSL
In the same product, most dangerous first.
CVE-2017-13099HIGHwolfSSL Bleichenbacher/ROBOTEPSS 27.4%CVE-2017-2800HIGHCVE-2017-2800EPSS 8.5%CVE-2024-0901HIGHSEGV and out of bounds memory read from malicious packetEPSS 0.7%CVE-2023-3724CRITICALTLS 1.3 client issue handling malicious server when not including a KSE and PSK extensionEPSS 0.7%CVE-2023-6936MEDIUM Heap-buffer over-read with WOLFSSL_CALLBACKSEPSS 0.6%CVE-2026-5194CRITICALwolfSSL ECDSA Certificate VerificationEPSS 0.6%