CVE-2021-26341
MEDIUMCVSS 6.5/10EPSS 0.31%
Last modified
CVE-2021-26341 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Some AMD CPUs may transiently execute beyond unconditional direct branches, which may potentially result in data leakage.. EPSS estimates a 0.31% chance of exploitation in the next 30 days.
Description
Some AMD CPUs may transiently execute beyond unconditional direct branches, which may potentially result in data leakage.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Amd | Athlon X4 940 Firmware | All versions |
| Amd | Athlon X4 950 Firmware | All versions |
| Amd | Athlon X4 970 Firmware | All versions |
| Amd | Athlon X4 835 Firmware | All versions |
| Amd | Athlon X4 845 Firmware | All versions |
| Amd | Athlon X4 830 Firmware | All versions |
| Amd | Athlon X4 840 Firmware | All versions |
| Amd | Athlon X4 860k Firmware | All versions |
| Amd | Athlon X4 870k Firmware | All versions |
| Amd | Athlon X4 880k Firmware | All versions |
| Amd | Athlon X4 750 Firmware | All versions |
| Amd | Athlon X4 760k Firmware | All versions |
| Amd | Ryzen Threadripper Pro 5995wx Firmware | All versions |
| Amd | Ryzen Threadripper Pro 5975wx Firmware | All versions |
| Amd | Ryzen Threadripper Pro 5965wx Firmware | All versions |
| Amd | Ryzen Threadripper Pro 5955wx Firmware | All versions |
| Amd | Ryzen Threadripper Pro 5945wx Firmware | All versions |
| Amd | Ryzen Threadripper 2990wx Firmware | All versions |
| Amd | Ryzen Threadripper 2970wx Firmware | All versions |
| Amd | Ryzen Threadripper 2950x Firmware | All versions |
| Amd | Ryzen Threadripper 2920x Firmware | All versions |
| Amd | Ryzen Threadripper 3970x Firmware | All versions |
| Amd | A12-9730p Firmware | All versions |
| Amd | A12-9700p Firmware | All versions |
| Amd | A10-9630p Firmware | All versions |
| Amd | A10-9600p Firmware | All versions |
| Amd | A9-9420 Firmware | All versions |
| Amd | A9-9410 Firmware | All versions |
| Amd | A6-9220 Firmware | All versions |
| Amd | A6-9220c Firmware | All versions |
| Amd | A6-9210 Firmware | All versions |
| Amd | A4-9120 Firmware | All versions |
| Amd | Ryzen 7 2700x Firmware | All versions |
| Amd | Ryzen 7 2700 Firmware | All versions |
| Amd | Ryzen 5 2600x Firmware | All versions |
| Amd | Ryzen 5 2600 Firmware | All versions |
| Amd | Ryzen 9 3950x Firmware | All versions |
| Amd | Ryzen 9 3900x Firmware | All versions |
| Amd | Ryzen 7 3800x Firmware | All versions |
| Amd | Ryzen 7 3700x Firmware | All versions |
| Amd | Ryzen 5 3600x Firmware | All versions |
| Amd | Ryzen 5 3600 Firmware | All versions |
| Amd | Ryzen 5 3400g Firmware | All versions |
| Amd | Ryzen 3 3300x Firmware | All versions |
| Amd | Ryzen 3 3300g Firmware | All versions |
| Amd | Ryzen 3 3100 Firmware | All versions |
| Amd | Ryzen 7 4700g Firmware | All versions |
| Amd | Ryzen 7 4700ge Firmware | All versions |
| Amd | Ryzen 5 4600g Firmware | All versions |
| Amd | Ryzen 5 4600ge Firmware | All versions |
Showing 50 of 126 affected configurations. See NVD for the full list.
References
- https://www.openwall.com/lists/oss-security/2022/03/18/2Mailing List, Third Party Advisory
- https://www.openwall.com/lists/oss-security/2022/03/18/2Mailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-26341?
Some AMD CPUs may transiently execute beyond unconditional direct branches, which may potentially result in data leakage.
How severe is CVE-2021-26341?
CVE-2021-26341 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.31% probability of exploitation in the next 30 days.
How do I fix CVE-2021-26341?
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.
Related CVEs from 2021
- CVE-2021-26335Improper input and range checking in the AMD Secure Processo…7.8
- CVE-2021-26336Insufficient bounds checking in System Management Unit (SMU)…5.5
- CVE-2021-26337Insufficient DRAM address validation in System Management Un…5.5
- CVE-2021-26338Improper access controls in System Management Unit (SMU) may…7.5
- CVE-2021-26339A bug in AMD CPU’s core logic may allow for an attacker, usi…5.5
- CVE-2021-26340A malicious hypervisor in conjunction with an unprivileged a…8.4
- CVE-2021-26342In SEV guest VMs, the CPU may fail to flush the Translation …3.3
- CVE-2021-26343Insufficient validation in ASP BIOS and DRTM commands may al…5.5
- CVE-2021-26344An out of bounds memory write when processing the AMD PSP1 C…8.2
- CVE-2021-26345Failure to validate the value in APCB may allow a privileged…4.9
- CVE-2021-26346Failure to validate the integer operand in ASP (AMD Secure P…5.5
- CVE-2021-26347Failure to validate the integer operand in ASP (AMD Secure P…4.7
Are you affected by CVE-2021-26341?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST
