CVE-2021-27421

CRITICAL
Published May 3, 20224y ago · Modified Jun 17, 20262w ago
9.8 CVSS 3.1
Critical
Find Similar
Published May 3, 2022 4y ago
Last Modified Jun 17, 2026 2w ago

Description

NXP MCUXpresso SDK versions prior to 2.8.2 are vulnerable to integer overflow in SDK_Malloc function, which could allow to access memory locations outside the bounds of a specified array, leading to unexpected behavior such segmentation fault when assigning a particular block of memory from the heap via malloc.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-190 Integer Overflow or Wraparound Numeric Error

Affected Products 1

VendorProductVersionRange
nxpmcuxpresso_software_development_kit* <2.8.2

References 2

  • mcuxpresso.nxp.com https://mcuxpresso.nxp.com/en/welcome
    ProductVendor Advisory
  • cisa.gov https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04
    Third Party AdvisoryUS Government Resource

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.