CVE-2021-46795
MEDIUMCVSS 4.7/10EPSS 0.14%
Last modified
CVE-2021-46795 is a medium-severity vulnerability rated 4.7/10 on the CVSS scale. A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of service.. EPSS estimates a 0.14% chance of exploitation in the next 30 days.
Description
A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of service.
Metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Amd | Comboam4v2 Pi Firmware | < 1.2.0.5 |
| Amd | Renoirpi-Fp6 Firmware | < 1.0.0.7 |
| Amd | Cezannepi-Fp6 Firmware | < 1.0.0.6 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-46795?
A TOCTOU (time-of-check to time-of-use) vulnerability exists where an attacker may use a compromised BIOS to cause the TEE OS to read memory out of bounds that could potentially result in a denial of service.
How severe is CVE-2021-46795?
CVE-2021-46795 has a CVSS score of 4.7/10 (MEDIUM severity). The EPSS model estimates a 0.14% probability of exploitation in the next 30 days.
How do I fix CVE-2021-46795?
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.
Are you affected by CVE-2021-46795?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST