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CVE-2021-27433 Details
Description
ARM mbed-ualloc memory library version 1.3.0 is vulnerable to integer wrap-around in function mbed_krbs, which can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 16, 2025Exploitation: NoneAutomatable: YesTechnical Impact: Partial
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/ARMmbed/mbed-os/pull/14408 | CVE | Issue TrackingPatchThird Party Advisory |
| https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04 | CVE | Third Party AdvisoryUS Government Resource |
| https://github.com/ARMmbed/mbed-os/pull/14408 | [email protected] | Issue TrackingPatchThird Party Advisory |
| https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04 | [email protected] | Third Party AdvisoryUS Government Resource |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-190 | Integer Overflow or Wraparound | [email protected] |
| CWE-190 | Integer Overflow or Wraparound | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| arm mbed ualloc | 1.3.0 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Nov 21, 2024 | CVE Modified | CVE |
| May 14, 2024 | CVE Modified | [email protected] |
| May 12, 2022 | Initial Analysis | [email protected] |