Integer overflow in Micrium OS
CVE-2021-27411
Micrium OS Versions 5.10.1 and prior are vulnerable to integer wrap-around in functions Mem_DynPoolCreate, Mem_DynPoolCreateHW and Mem_PoolCreate. This unverified memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as very small blocks of memory being allocated instead of very large ones.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
EPSS: 0.009 (57.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 57.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: +0.000
Affected products
- Micrium OS — versions unspecified
- Silabs Micrium OS
Weakness classification (CWE)
References
- www.cisa.gov/uscert/ics/advisories/icsa-21-119-04 (US Government Resource, Third Party Advisory)
- www.silabs.com/developers/micrium-os (Product, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-27411?
- CVE-2021-27411 is a medium-severity vulnerability in Micrium OS, classified under Integer Overflow or Wraparound. CVSS score: 6.5/10. Published 2022-05-03.
- How severe is CVE-2021-27411?
- Medium severity. CVSS v3 base score is 6.5 out of 10.