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.
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Fixes

Solution

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Workaround

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History

Mon, 24 Nov 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Mon, 24 Nov 2025 09:15:00 +0000

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

Fri, 21 Nov 2025 23:00:00 +0000

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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: wolfSSL

Published:

Updated: 2025-11-24T15:42:29.485Z

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 : Awaiting Analysis

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

Modified: 2025-11-25T22:16:42.557

Link: CVE-2025-11931

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-11-24T09:08:12Z