PT-2026-29692

CVE-2026-5244

Published

2026-04-02

Updated

2026-04-30

Description by

CVSS 3.1

9.8

Critical

MetricsAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Cesanta Mongoose versions up to 7.20

Description A flaw exists in the TLS 1.3 Handler component of Cesanta Mongoose, specifically within the mg tls recv cert function in the mongoose.c file. Manipulation of the pubkey argument can lead to a heap-based buffer overflow, potentially allowing for remote attacks.

Recommendations Upgrade to version 7.21 or later.

Exploitability

Exploit

Fix

Impacts

Researchers

Vendors

Affected products

Weakness enumeration

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-122: Heap-based Buffer Overflow

Related identifiers