How severe is CVE-2021-26368?

CVE-2021-26368 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-26368 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-26368?

CVE-2021-26368 primarily affects Amd Ryzen 3 2200u Firmware. In total, 70 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-26368?

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

When was CVE-2021-26368 published?

CVE-2021-26368 was published on 2022-05-12 and last updated on 2026-06-17.

CVE-2021-26368

CVE-2021-26368 is a medium-severity vulnerability in Amd Ryzen 3 2200u Firmware with a CVSS 3.x base score of 4.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-345.

Key facts

Severity: Medium (CVSS 3.x base score 4.4)
CVSS v2: 4.9
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-345
Affected product: Amd Ryzen 3 2200u Firmware
Published: 2022-05-12
Last modified: 2026-06-17

Description

Insufficient check of the process type in Trusted OS (TOS) may allow an attacker with privileges to enable a lesser privileged process to unmap memory owned by a higher privileged process resulting in a denial of service.

Frequently asked questions

What is CVE-2021-26368?: Insufficient check of the process type in Trusted OS (TOS) may allow an attacker with privileges to enable a lesser privileged process to unmap memory owned by a higher privileged process resulting in a denial of service.
How severe is CVE-2021-26368?: CVE-2021-26368 has a CVSS 3.x base score of 4.4, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-26368 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-26368?: CVE-2021-26368 primarily affects Amd Ryzen 3 2200u Firmware. In total, 70 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-26368?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-26368 published?: CVE-2021-26368 was published on 2022-05-12 and last updated on 2026-06-17.

References

https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1027

Affected products (70)

cpe:2.3:o:amd:ryzen_3_2200u_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_2300u_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3100_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3300g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_3300x_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_5125c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_5400u_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_5425c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_3_5425u_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5300g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5300ge_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5600g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5600ge_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5600x_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5700g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5700ge_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5800x_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5800x3d_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5900x_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5950x_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_2500u_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_2600_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_2600h_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_2600x_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_3400g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_3450g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_3600_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_3600x_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_5560u_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_5600h_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_5600hs_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_5600u_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_5600x_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_5625c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_5625u_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_5700g_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_5_5700ge_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_2700_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_2700u_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:amd:ryzen_7_2700x_firmware:-:*:*:*:*:*:*:*

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