CVE-2021-26367
MEDIUMCVSS 6/10EPSS 0.16%
Last modified
CVE-2021-26367 is a medium-severity vulnerability rated 6/10 on the CVSS scale. A malicious attacker in x86 can misconfigure the Trusted Memory Regions (TMRs), which may allow the attacker to set an arbitrary address range for the TMR, potentially leading to a loss of integrity and availability.. EPSS estimates a 0.16% chance of exploitation in the next 30 days.
Description
A malicious attacker in x86 can misconfigure the Trusted Memory Regions (TMRs), which may allow the attacker to set an arbitrary address range for the TMR, potentially leading to a loss of integrity and availability.
Metrics
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Amd | Radeon Software | < 23.12.1 |
| Amd | Radeon Software | <= 23.q4 |
| Amd | Ryzen 9 5980hx Firmware | < cezannepi-fp6_1.0.0.6 |
| Amd | Ryzen 3 3300u Firmware | < picassopi-fp5_1.0.0.e |
| Amd | Ryzen 3 3350u Firmware | < picassopi-fp5_1.0.0.e |
| Amd | Ryzen 5 3450u Firmware | < picassopi-fp5_1.0.0.e |
| Amd | Ryzen 5 3500u Firmware | < picassopi-fp5_1.0.0.e |
| Amd | Ryzen 5 3500c Firmware | < picassopi-fp5_1.0.0.e |
| Amd | Ryzen 5 3550h Firmware | < picassopi-fp5_1.0.0.e |
| Amd | Ryzen 5 3580u Firmware | < picassopi-fp5_1.0.0.e |
| Amd | Ryzen 7 3700u Firmware | < picassopi-fp5_1.0.0.e |
| Amd | Ryzen 7 3700c Firmware | < picassopi-fp5_1.0.0.e |
| Amd | Ryzen 7 3750h Firmware | < picassopi-fp5_1.0.0.e |
| Amd | Ryzen 7 3780u Firmware | < picassopi-fp5_1.0.0.e |
| Amd | Athlon Gold 3150c Firmware | < picassopi-fp5_1.0.0.e |
| Amd | Athlon Gold 3150u Firmware | < picassopi-fp5_1.0.0.e |
| Amd | Athlon Pro 3145b Firmware | < picassopi-fp5_1.0.0.e |
| Amd | Athlon Silver 3050c Firmware | < picassopi-fp5_1.0.0.e |
| Amd | Athlon Silver 3050u Firmware | < picassopi-fp5_1.0.0.e |
| Amd | Athlon Pro 3045b Firmware | < picassopi-fp5_1.0.0.e |
| Amd | Athlon Silver 3050e Firmware | < picassopi-fp5_1.0.0.e |
| Amd | Athlon Gold Pro 3150g Firmware | < comboam4pi_1.0.0.9 |
| Amd | Athlon Gold 3150g Firmware | < comboam4pi_1.0.0.9 |
| Amd | Athlon Gold Pro 3150ge Firmware | < comboam4pi_1.0.0.9 |
| Amd | Athlon Pro 300ge Firmware | < comboam4pi_1.0.0.9 |
| Amd | Ryzen 3 4300ge Firmware | < comboam4v2_pi_1.2.0.5 |
| Amd | Ryzen 5 4600ge Firmware | < comboam4v2_pi_1.2.0.5 |
| Amd | Ryzen 7 4700ge Firmware | < comboam4v2_pi_1.2.0.5 |
| Amd | Ryzen 3 4300g Firmware | < comboam4v2_pi_1.2.0.5 |
| Amd | Ryzen 5 4600g Firmware | < comboam4v2_pi_1.2.0.5 |
| Amd | Ryzen 7 4700g Firmware | < comboam4v2_pi_1.2.0.5 |
| Amd | Ryzen 3 5300ge Firmware | < comboam4v2_pi_1.2.0.5 |
| Amd | Ryzen 3 5300g Firmware | < comboam4v2_pi_1.2.0.5 |
| Amd | Ryzen 5 5600ge Firmware | < comboam4v2_pi_1.2.0.5 |
| Amd | Ryzen 5 5600g Firmware | < comboam4v2_pi_1.2.0.5 |
| Amd | Ryzen 7 5700ge Firmware | < comboam4v2_pi_1.2.0.5 |
| Amd | Ryzen 7 5700g Firmware | < comboam4v2_pi_1.2.0.5 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2021-26367?
A malicious attacker in x86 can misconfigure the Trusted Memory Regions (TMRs), which may allow the attacker to set an arbitrary address range for the TMR, potentially leading to a loss of integrity and availability.
How severe is CVE-2021-26367?
CVE-2021-26367 has a CVSS score of 6/10 (MEDIUM severity). The EPSS model estimates a 0.16% probability of exploitation in the next 30 days.
How do I fix CVE-2021-26367?
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.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-26367?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST