CVE-2020-25756

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CVSS 3.1

9.8 critical

EPSS

2%p75

Published

Sep 18, 2020 (Sep 18, 2020)

Modified

Jun 17, 2026

Description

A buffer overflow vulnerability exists in the mg_get_http_header function in Cesanta Mongoose 6.18 due to a lack of bounds checking. A crafted HTTP header can exploit this bug. NOTE: a committer has stated "this will not happen in practice.

Vendors: cesanta
Products: mongoose
Weakness: CWE-120
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (1.6%)

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