CVE-2021-26353
HIGHCVSS 7.8/10EPSS 0.26%
Last modified
CVE-2021-26353 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Failure to validate inputs in SMM may allow an attacker to create a mishandled error leaving the DRTM UApp in a partially initialized state potentially resulting in loss of memory integrity.. EPSS estimates a 0.26% chance of exploitation in the next 30 days.
Description
Failure to validate inputs in SMM may allow an attacker to create a mishandled error leaving the DRTM UApp in a partially initialized state potentially resulting in loss of memory integrity.
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 |
|---|---|---|
| Amd | Epyc 7763 Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 7713p Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 7713 Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 7663 Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 7643 Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 75f3 Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 7543p Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 7543 Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 7513 Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 7453 Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 74f3 Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 7443p Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 7443 Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 7413 Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 73f3 Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 7343 Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 7313p Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 7313 Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 72f3 Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 7773x Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 7473x Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 7573x Firmware | < milanpi-sp3_1.0.0.4 |
| Amd | Epyc 7373x Firmware | < milanpi-sp3_1.0.0.4 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-26353?
Failure to validate inputs in SMM may allow an attacker to create a mishandled error leaving the DRTM UApp in a partially initialized state potentially resulting in loss of memory integrity.
How severe is CVE-2021-26353?
CVE-2021-26353 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.
How do I fix CVE-2021-26353?
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-2021-26353?
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Scan your code nowSource: NVD / NIST