CVE-2021-26530

PoC —

CVSS 3.1

9.1 critical

EPSS

1%p72

Published

Feb 8, 2021 (Feb 8, 2021)

Modified

Jun 17, 2026

Description

The mg_tls_init function in Cesanta Mongoose HTTPS server 7.0 (compiled with OpenSSL support) is vulnerable to remote OOB write attack via connection request after exhausting memory pool.

Vendors: cesanta
Products: mongoose
Weakness: CWE-787
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (1.5%)

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