Integer overflow in Arm Mbed
CVE-2021-27435
ARM mbed product Version 6.3.0 is vulnerable to integer wrap-around in malloc_wrapper function, which can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.
Vulnerability class: Integer Overflow
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.019 (78.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 78.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.019 · change: +0.001
Affected products
- Arm Mbed — versions 6.3.0
Weakness classification (CWE)
References
- www.cisa.gov/uscert/ics/advisories/icsa-21-119-04 (US Government Resource, Third Party Advisory)
- github.com/ARMmbed/mbed-os/pull/14408 (Exploit, Patch, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2021-27435?
- CVE-2021-27435 is a high-severity vulnerability in Arm Mbed, classified under Integer Overflow or Wraparound. CVSS score: 7.3/10. Published 2022-05-03.
- How severe is CVE-2021-27435?
- High severity. CVSS v3 base score is 7.3 out of 10.