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CVE-2021-27425: Cesanta Software Mongoose-OS v2.17.0 is vulnerable to integer wrap-around in function mm_malloc. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected beh...
CVE-2021-27425 · published 4 years ago
Summary
Cesanta Software Mongoose-OS v2.17.0 is vulnerable to integer wrap-around in function mm_malloc. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| cesanta | mongoose_os |
2.17.0 cpe:2.3:o:cesanta:mongoose_os:2.17.0:*:*:*:*:*:*:* |
Original advisory text
Cesanta Software Mongoose-OS v2.17.0 is vulnerable to integer wrap-around in function mm_malloc. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected beh...
Cesanta Software Mongoose-OS v2.17.0 is vulnerable to integer wrap-around in function mm_malloc. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.
References
- https://github.com/cesanta/mongoose-os Product Third Party Advisory
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04 Third Party Advisory US Government Resource
Internet-facing
14 days
Internal
60 days
- Not known to be exploited
- Can be exploited automatically
- Gives an attacker partial control
Type
CWE-190Integer Overflow
Timeline
Published3 May 2022
Updated3 Nov 2026
First seen29 Sep 2026
Sources
CVE-2021-27425 · NVD
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