How severe is CVE-2021-26367?

CVE-2021-26367 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2021-26367 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-26367?

CVE-2021-26367 primarily affects Amd Radeon Software. In total, 37 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-26367?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2021-26367 have an EU (EUVD) identifier?

Yes. CVE-2021-26367 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-13173.

When was CVE-2021-26367 published?

CVE-2021-26367 was published on 2024-08-13 and last updated on 2026-06-17.

CVE-2021-26367

CVE-2021-26367 is a medium-severity vulnerability in Amd Radeon Software with a CVSS 3.x base score of 5.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.7)
EPSS exploit prediction: 0% (5th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2021-13173
Affected product: Amd Radeon Software
Published: 2024-08-13
Last modified: 2026-06-17

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.

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 3.x base score of 5.7, rated medium severity. It is exploitable over local access with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2021-26367 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (5th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-26367?: CVE-2021-26367 primarily affects Amd Radeon Software. In total, 37 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-26367?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2021-26367 have an EU (EUVD) identifier?: Yes. CVE-2021-26367 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2021-13173.
When was CVE-2021-26367 published?: CVE-2021-26367 was published on 2024-08-13 and last updated on 2026-06-17.

References

Affected products (37)

cpe:2.3:a:amd:radeon_software:*:*:*:*:adrenalin:*:*:*
cpe:2.3:a:amd:radeon_software:*:*:*:*:pro:*:*:*
cpe:2.3:o:amd:ryzen_9_5980hx_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3300u_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3350u_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_3450u_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_3500u_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_3500c_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_3550h_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_3580u_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_3700u_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_3700c_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_3750h_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_3780u_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_gold_3150c_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_gold_3150u_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_pro_3145b_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_silver_3050c_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_silver_3050u_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_pro_3045b_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_silver_3050e_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_gold_pro_3150g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_gold_3150g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_gold_pro_3150ge_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:athlon_pro_300ge_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_4300ge_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_4600ge_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_4700ge_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_4300g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_4600g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_4700g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_5300ge_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_5300g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_5600ge_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_5600g_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_5700ge_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_5700g_firmware:*:*:*:*:*:*:*:*

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