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TI-2021-08911 Aliases CVE-2021-27421GHSA-78hf-2qv8-j9h7

NXP MCUXpresso SDK Integer Overflow or Wraparound

Priority MEDIUM 50CWE-190Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00872 59th percentileScored 2026-11-07
Fix Fixed MCUXpresso SDK (NXP): 2.8.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
NXPMCUXpresso SDKbefore 2.8.22.8.2Patch availableCNA
  • MCUXpresso SDK VendorNXP Affected before 2.8.2 Fixed in 2.8.2 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:nxp:mcuxpresso_software_development_kit:*:*:*:*:*:*:*:*before 2.8.2VulnerableNXP
  • cpe:2.3:a:nxp:mcuxpresso_software_development_kit:*:*:*:*:*:*:*:* Versions before 2.8.2 Vulnerable ·NXP

Remediation

  • Fix · CNA MCUXpresso SDK (NXP) Fixed in 2.8.2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-27421
  2. 2026-10-03 Alias added: GHSA-78hf-2qv8-j9h7

References

Advisory 2

  • TI-2019-13063 The Bluetooth Low Energy implementation on NXP SDK through 2.2.1 for KW41Z devices does… CVSS 3.1HIGH 8.8
  • TI-2021-15894 NXP MCUXpresso SDK v2.7.0 was discovered to contain a buffer overflow in the function… CVSS 3.1HIGH 7.8
  • TI-2021-15893 NXP MCUXpresso SDK v2.7.0 was discovered to contain a buffer overflow in the function USB_HostProcessCallback(). CVSS 3.1HIGH 7.8
  • TI-2019-12728 The Bluetooth Low Energy (BLE) stack implementation on the NXP KW41Z (based on the… CVSS 3.1MEDIUM 6.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences