CVE-2024-42391: Cesanta Mongoose Web Server · Use of Out-of-range Pointer Offset Vulnerability
Source GCVE Database
Not known to be exploited · CVSS 4.3 Medium.
Data as of 26 Oct 2026, 14:05 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 20% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 18 Nov 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| CesantaMongoose Web Server | Affected
| Fixed in– |
GitHubMongoose Web Serverpkg:github/Mongoose Web ServerOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Until an official fix is available, monitor vendor communications for updates. No specific mitigations or workarounds are provided in the available data.
Description
CVE-2024-42391 is a medium severity vulnerability in Cesanta Mongoose Web Server v7.14 where an attacker can send an unexpected TLS packet causing the application to read unintended heap memory due to an out-of-range pointer offset.