CVE-2021-27435
CVSS v3
9.8
CRITICAL
EPSS Score
1.9 %
exploit probability, as of 2026-10-19
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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Affected and fixed versions
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
Multiple RTOS (Update E)
BlackBerry QNX SDP: Versions 6.5.0 SP1 and earlier · TencentOS-tiny: Version 3.1.0 · Google Cloud IoT Device SDK: Version 1.0.2
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.
Technical details
- Published
- 2022-05-03
Frequently asked questions
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