Integer overflow in Texas Instruments Cc32xx
CVE-2021-27502
Texas Instruments TI-RTOS, when configured to use HeapMem heap(default), malloc returns a valid pointer to a small buffer on extremely large values, which can trigger an integer overflow vulnerability in 'HeapMem_allocUnprotected' and result in code execution.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (18.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 18.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Texas Instruments Cc32xx — versions 0
- Texas Instruments Simplelink-Cc13xx — versions 0
- Texas Instruments Simplelink-Cc26xx — versions 0
- Texas Instruments Simplelink-Cc32xx — versions 0
- Texas Instruments Simplelink Msp432e4xx — versions all versions
- Ti Cc3200
- Ti Cc3220r
- Ti Cc3220s
- Ti Cc3220sf
- Ti Cc3230s
Weakness classification (CWE)
References
- www.cisa.gov/news-events/ics-advisories/icsa-21-119-04 (US Government Resource, Third Party Advisory)
- www.ti.com/tool/TI-RTOS-MCU (Product)
Frequently asked questions
- What is CVE-2021-27502?
- CVE-2021-27502 is a high-severity vulnerability in Texas Instruments Cc32xx, classified under Integer Overflow or Wraparound. CVSS score: 7.4/10. Published 2023-11-21.
- How severe is CVE-2021-27502?
- High severity. CVSS v3 base score is 7.4 out of 10.