CVE-2025-11931CWE-191

CVE-2025-11931

High · published November 22, 2025

CVSS v3.1
8.2
EPSS
0%
Percentile
26.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
CVSS v4.0
Not supplied
EPSS
0.00340 · 26.2th percentile
Weakness
CWE-191 · Integer Underflow (Wrap or Wraparound)
Published
2025-11-22T04:15Z
Affected products (1)
ProductVersionsFixed in
wolfssl/wolfsslall versions—
References (1)
https://github.com/wolfSSL/wolfssl/pull/9223 · [email protected]
EPSS history
Timeline
  • 21 NOV 22:57Z
    Integer Underflow Leads to Out-of-Bounds Access in XChaCha20-Poly1305 Decrypt
    cvelistv5