CVE-2021-26461 - CVE House
Back to Database
Status published Critical CVE-2021-26461

malloc, realloc and memalign implementations are vulnerable to integer wrap-arounds

Vulnerability Description

Apache Nuttx Versions prior to 10.1.0 are vulnerable to integer wrap-around in functions malloc, realloc and memalign. This improper memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-26461

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Apache NuttX would like to thank Omri Ben-Bassat of Section 52 at Azure Defender for IoT of Microsoft Corp for bringing this issue to our attention.

References

More from Apache Software Foundation

View All →
CVE-2025-69233
Apache CloudStack: Domain/account resources limits not honored
Medium 6.5
CVE-2025-69219
Apache Airflow Providers Http: Unsafe Pickle Deserialization in apache-airflow-providers-http leading to RCE via HttpOperator
Unknown 0
CVE-2025-68675
Apache Airflow: proxy credentials for various providers might leak in task logs
Unknown 0
CVE-2025-68637
Apache Uniffle: Insecure SSL Configuration in Uniffle HTTP Client
Unknown 0
CVE-2025-68493
Apache Struts, Apache Struts: XXE vulnerability in outdated XWork component
Unknown 0

Affected Vendor

Apache Software Foundation

View all reports →

Affected Software

Apache NuttX
Vulnerable Versions:
Apache NuttX

Timeline

Official Publish: June 21st, 2021
Last Modified: August 3rd, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-190

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1068 Exploitation for Privilege Escalation
Privilege Escalation
T1055 Process Injection
Defense Evasion
T1105 Ingress Tool Transfer
Command and Control
T1499 Endpoint Denial of Service
Impact