CVE-2025-11931HIGH 8.2EPSS p20.1%
CVE-2025-11931CVE-2025-11931
Description
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.
Scoring
| CVSS 3.1 | 8.2 (HIGH) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H |
| EPSS | 0.29% probability of exploitation · percentile 20.1% · 2026-06-18T12:00:27Z |
| Published | 2025-11-21 |
| Last modified | 2025-12-04 |
Underlying weaknesses· 1
References
1
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Integer Underflow (Wrap or Wraparound)cwe-191 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.