CVE-2026-77236
Medium
Elevated severity or exploit probability.
CVSS base
7.3
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H
EPSS — probability of exploitation (30 days)
0.1%
1.7th percentile
CISA KEV
Not listed
Weakness / dates
CWE-787
Published 2026-08-21 · modified 2026-08-25
CVSS breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H
| Attack Vector | L | Local |
| Attack Complexity | L | Low |
| Privileges Required | L | Low |
| User Interaction | N | None |
| Scope | C | Changed |
| Confidentiality | N | None |
| Integrity | L | Low |
| Availability | H | High |
Timeline
- 2026-08-21 — Published (NVD)
- 2026-08-25 — Last modified (NVD)
Description
Missing minimum size validation in secure context allocation in FreeRTOS-Kernel before 11.3.1 might allow local users to corrupt secure-world heap metadata via an out-of-bounds write with an undersized stack size parameter. To remediate this issue, users should upgrade to version 11.3.1 or later.