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 wc_XChaCha20Poly1305_Decrypt() which is not used with TLS connections, only from direct calls from an application.

CVSS v3 8.2 HIGH

8.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/wolfSSL/wolfssl/pull/9223	Issue Tracking Patch

Configurations

Configuration 1 (hide)

cpe:2.3:a:wolfssl:wolfssl:5.8.4:*:*:*:*:*:*:*

History

04 Dec 2025, 16:21

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 8.2
References	~~() https://github.com/wolfSSL/wolfssl/pull/9223 -~~	() https://github.com/wolfSSL/wolfssl/pull/9223 - Issue Tracking, Patch
First Time		Wolfssl Wolfssl wolfssl
CPE		cpe:2.3:a:wolfssl:wolfssl:5.8.4:::::::*

21 Nov 2025, 23:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-11-21 23:15

Updated : 2025-12-04 16:21

NVD link : CVE-2025-11931

Mitre link : CVE-2025-11931

CVE.ORG link : CVE-2025-11931

JSON object : View

Products Affected

wolfssl

wolfssl

CWE

CWE-191

Integer Underflow (Wrap or Wraparound)

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