CVE-2021-27429
HIGHCVSS 7.8/10EPSS 0.28%
Last modified
CVE-2021-27429 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Texas Instruments TI-RTOS returns a valid pointer to a small buffer on extremely large values. This can trigger an integer overflow vulnerability in 'HeapTrack_alloc' and result in code execution. EPSS estimates a 0.28% chance of exploitation in the next 30 days.
Description
Texas Instruments TI-RTOS returns a valid pointer to a small buffer on extremely large values. This can trigger an integer overflow vulnerability in 'HeapTrack_alloc' and result in code execution.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Ti | Real-Time Operating System | All versions |
| Ti | Simplelink Cc13xx Software Development Kit | < 4.40.00 |
| Ti | Simplelink Cc26xx Software Development Kit | < 4.40.00 |
| Ti | Simplelink Cc32xx Software Development Kit | < 4.10.03 |
| Ti | Simplelink Msp432e401y | All versions |
| Ti | Simplelink Msp432e411y | All versions |
References
- https://www.cisa.gov/news-events/ics-advisories/icsa-21-119-04Third Party Advisory, US Government Resource
- https://www.cisa.gov/news-events/ics-advisories/icsa-21-119-04Third Party Advisory, US Government Resource
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-27429?
Texas Instruments TI-RTOS returns a valid pointer to a small buffer on extremely large values. This can trigger an integer overflow vulnerability in 'HeapTrack_alloc' and result in code execution.
How severe is CVE-2021-27429?
CVE-2021-27429 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.
How do I fix CVE-2021-27429?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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Are you affected by CVE-2021-27429?
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