Critical severity · published May 3, 2022
CVE-2021-27425
Cesanta Software Mongoose-OS v2.17.0 is vulnerable to integer wrap-around in function mm_malloc
9.8
CVSS
1.7%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.7% · higher than 77% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
Mongoose OS · Cesanta
2.17.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-27425
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-27425
Product
https://github.com/cesanta/mongoose-os
Third Party Advisory
https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04
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