CVE-2021-26529

CRITICAL
9.1
CVSS Score
Published: February 8, 2021 at 08:13 PM UTC
Updated: June 17, 2026 at 03:43 AM UTC
1 product affected across 1 vendorMongoose

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Severity
CRITICAL9.1
Exploit prediction
EPSS 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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.7 ≤ v ≤ 6.187.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_MISCExploitThird Party Advisory
https://github.com/cesanta/mongoose/issues/1203

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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