Critical severity · published May 3, 2022
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…
9.8
CVSS
1.9%
EPSS
No
On KEV
Description
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.
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)1.9% · higher than 79% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MB
Mbed · Arm
6.3.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-27435
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-27435
Exploit
https://github.com/ARMmbed/mbed-os/pull/14408
Third Party Advisory
https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04
More from Mbed
7.5
CVE-2024-48986
An issue was discovered in MBed OS 6.16.0
7.5
CVE-2024-48982
An issue was discovered in MBed OS 6.16.0
7.5
CVE-2024-48985
An issue was discovered in MBed OS 6.16.0
7.5
CVE-2024-48983
An issue was discovered in MBed OS 6.16.0
7.5
CVE-2024-48981
An issue was discovered in MBed OS 6.16.0