CVE-2024-42391: Use of Out-of-range Pointer Offset in Mongoose Web Server library

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-11-18 · updated 2026-09-08
Weakness: CWE-823

Description

Use of Out-of-range Pointer Offset vulnerability in Cesanta Mongoose Web Server v7.14 allows an attacker to send an unexpected TLS packet and force the application to read unintended heap memory space.

Affected products

Cesanta Mongoose: through 7.14

References

https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2024-42391
https://cert-portal.siemens.com/productcert/html/ssa-142885.html

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