CVE-2025-11931
Low
Published: 21 November 2025
Published
21 November 2025
Modified
04 December 2025
KEV Added
—
Patch
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CVSS Score v4
2.1
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score
0.0003
7.4th percentile
Risk Priority
4
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2025-11931 is a low-severity Wrap or Wraparound (CWE-191) vulnerability in Wolfssl Wolfssl. Its CVSS base score is 2.1 (Low).
Operationally, ranked at the 7.4th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-198522
Vulnerability details
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.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
wolfssl
wolfssl
5.8.4
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.