CVE-2021-26529

CRITICAL

Cesanta Mongoose 6.7-6.18 and 7.0 - Remote Out-of-bounds Write via Connection Request

Title source: llm
STIX 2.1

Description

The mg_tls_init function in Cesanta Mongoose HTTPS server 7.0 and 6.7-6.18 (compiled with mbedTLS support) is vulnerable to remote OOB write attack via connection request after exhausting memory pool.

References (1)

Core 1
Core References
Exploit, Third Party Advisory x_refsource_misc
https://github.com/cesanta/mongoose/issues/1203

Scores

CVSS v3 9.1
EPSS 0.0146
EPSS Percentile 70.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Details

CWE
CWE-787
Status published
Products (2)
cesanta/mongoose 7.0
cesanta/mongoose 6.7 - 6.18
Published Feb 08, 2021
Tracked Since Feb 18, 2026