Integer Underflow Leads to Out-of-Bounds Access in XChaCha20-Poly1305 Decrypt

2.1 / 10

LOW

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

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.

Basic Information

ID CVE-2025-11931

Source wolfSSL

Published Nov 21, 2025 at 22:57

Affected Product

Vendor wolfSSL

Product wolfSSL

Version 5.8.4

Affected Versions wolfSSL wolfSSL 5.8.4

CWE Classification

CWE-191

References

github.com /wolfSSL/wolfssl/pull/9223

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    "published": "2025-11-21T22:57:32.802Z",
    "modified": "2025-11-21T22:57:32.802Z",
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Integer Underflow Leads to Out-of-Bounds Access in XChaCha20-Poly1305 Decrypt_CVE-2025-11931