What is CVE-2021-27425?

CVE-2021-27425 is a high-severity vulnerability in Cesanta Mongoose Os, classified under Integer Overflow or Wraparound. CVSS score: 7.3/10. Published 2022-05-03.

How severe is CVE-2021-27425?

High severity. CVSS v3 base score is 7.3 out of 10.

Integer overflow in Cesanta Mongoose Os

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 behavior such as a crash or a remote code injection/execution.

Vulnerability class: Integer Overflow

EPSS: 0.016 (72.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

Cesanta Mongoose_os — versions 2.17.0
Cesanta Software Mongoose-os — versions 2.17.0

Weakness classification (CWE)

CWE-190 — Integer Overflow or Wraparound

References

ics-cert@hq.dhs.gov (x_refsource_CONFIRM, US Government Resource, Third Party Advisory)
ics-cert@hq.dhs.gov (x_refsource_CONFIRM, Product, Third Party Advisory)

Frequently asked questions

What is CVE-2021-27425?: CVE-2021-27425 is a high-severity vulnerability in Cesanta Mongoose Os, classified under Integer Overflow or Wraparound. CVSS score: 7.3/10. Published 2022-05-03.
How severe is CVE-2021-27425?: High severity. CVSS v3 base score is 7.3 out of 10.