CVE-2021-26391
HIGHCVSS 7.8/10EPSS 0.17%
Last modified
CVE-2021-26391 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Insufficient verification of multiple header signatures while loading a Trusted Application (TA) may allow an attacker with privileges to gain code execution in that TA or the OS/kernel.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.
Description
Insufficient verification of multiple header signatures while loading a Trusted Application (TA) may allow an attacker with privileges to gain code execution in that TA or the OS/kernel.
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 | Enterprise Driver | < 22.10.20 |
| Amd | Radeon Pro Software | < 22.q2 |
| Amd | Radeon Software | < 22.5.2 |
| Amd | Radeon Rx Vega 56 Firmware | All versions |
| Amd | Radeon Rx Vega 64 Firmware | All versions |
| Amd | Ryzen 3 5300ge Firmware | All versions |
| Amd | Ryzen 3 5300g Firmware | All versions |
| Amd | Ryzen 5 5600ge Firmware | All versions |
| Amd | Ryzen 5 5600g Firmware | All versions |
| Amd | Ryzen 7 5700ge Firmware | All versions |
| Amd | Ryzen 7 5700g Firmware | All versions |
| Amd | Ryzen 3 5300u Firmware | All versions |
| Amd | Ryzen 5 5500u Firmware | All versions |
| Amd | Ryzen 7 5700u Firmware | All versions |
| Amd | Ryzen 3 5400u Firmware | All versions |
| Amd | Ryzen 5 5560u Firmware | All versions |
| Amd | Ryzen 5 5600u Firmware | All versions |
| Amd | Ryzen 5 5600h Firmware | All versions |
| Amd | Ryzen 5 5600hs Firmware | All versions |
| Amd | Ryzen 7 5800u Firmware | All versions |
| Amd | Ryzen 7 5800h Firmware | All versions |
| Amd | Ryzen 7 5800hs Firmware | All versions |
| Amd | Ryzen 9 5900hs Firmware | All versions |
| Amd | Ryzen 9 5900hx Firmware | All versions |
| Amd | Ryzen 9 5980hs Firmware | All versions |
| Amd | Ryzen 9 5980hx Firmware | All versions |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-26391?
Insufficient verification of multiple header signatures while loading a Trusted Application (TA) may allow an attacker with privileges to gain code execution in that TA or the OS/kernel.
How severe is CVE-2021-26391?
CVE-2021-26391 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.
How do I fix CVE-2021-26391?
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
- Same Subject, Wrong User: A Cross-Issuer Account Takeover in n8nStrix found an identity-binding bug in n8n's token-exchange flow enabling account takeover.
- 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-2021-26391?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST