CVE-2021-26461

9.8 criticalEPSS 5.0%

Critical (9.8) in apache nuttx. EPSS 5.0% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

9.8 critical

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

EPSS: 5.0% chance of exploitation in the next 30 days; higher than 92% of CVEs (scores of 2026-10-31)
CWE: CWE-190
Published: 2021-06-21
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

apache:nuttx

References

https://lists.apache.org/thread.html/r806fccf8b003ae812d807c6c7d97950d44ed29b2713418cbe3f2bddd%40%3Cdev.nuttx.apache.org%3E
https://lists.apache.org/thread.html/r806fccf8b003ae812d807c6c7d97950d44ed29b2713418cbe3f2bddd%40%3Cdev.nuttx.apache.org%3E

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