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.
Advisories

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Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Fri, 05 Dec 2025 01:30:00 +0900

Type Values Removed Values Added
CPEs cpe:2.3:a:wolfssl:wolfssl:5.8.4:*:*:*:*:*:*:*
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H'}


Tue, 25 Nov 2025 01:15:00 +0900

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 24 Nov 2025 18:15:00 +0900

Type Values Removed Values Added
First Time appeared Wolfssl
Wolfssl wolfssl
Vendors & Products Wolfssl
Wolfssl wolfssl

Sat, 22 Nov 2025 08:00:00 +0900

Type Values Removed Values Added
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.
Title Integer Underflow Leads to Out-of-Bounds Access in XChaCha20-Poly1305 Decrypt
Weaknesses CWE-191
References
Metrics cvssV4_0

{'score': 2.1, 'vector': '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: wolfSSL

Published:

Updated: 2025-12-08T15:38:46.308Z

Reserved: 2025-10-17T22:09:10.160Z

Link: CVE-2025-11931

cve-icon Vulnrichment

Updated: 2025-11-24T15:42:21.332Z

cve-icon NVD

Status : Analyzed

Published: 2025-11-21T23:15:43.690

Modified: 2025-12-04T16:21:09.590

Link: CVE-2025-11931

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-11-24T18:08:12Z

Weaknesses