CVE-2021-26393

Insufficient memory cleanup in the AMD Secure Processor (ASP) Trusted Execution Environment (TEE) may allow an authenticated attacker with privileges to generate a valid signed TA and potentially poison the contents of the process memory with attacker controlled data resulting in a loss of confidentiality.

Published: 2022-11-09 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-26393 is rated Low Risk (27.6/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.25%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2021-26393

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.13% 0.25% +0.11%
2 2026-05-10 0.15% 0.13% -0.02%
3 2025-12-16 — 0.15% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-26393

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.5 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 1.8 3.6 [email protected]

Weakness enumeration for CVE-2021-26393

OS Trackers for CVE-2021-26393

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2021-26393

Affected software / configurations for CVE-2021-26393

Vendor Product Version Raw CPE
amd enterprise_driver < 22.10.20 cpe:2.3:a:amd:enterprise_driver:*:*:*:*:*:*:*:*
amd radeon_pro_software < 22.q2 cpe:2.3:a:amd:radeon_pro_software:*:*:*:*:enterprise:*:*:*
amd radeon_software < 22.5.2 cpe:2.3:a:amd:radeon_software:*:*:*:*:*:*:*:*
amd radeon_rx_vega_56_firmware — cpe:2.3:o:amd:radeon_rx_vega_56_firmware:-:*:*:*:*:*:*:*
amd radeon_rx_vega_64_firmware — cpe:2.3:o:amd:radeon_rx_vega_64_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_2200ge_firmware — cpe:2.3:o:amd:ryzen_3_2200ge_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_2200g_firmware — cpe:2.3:o:amd:ryzen_3_2200g_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_2400ge_firmware — cpe:2.3:o:amd:ryzen_5_2400ge_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_2400g_firmware — cpe:2.3:o:amd:ryzen_5_2400g_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_5300ge_firmware — cpe:2.3:o:amd:ryzen_3_5300ge_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_5300g_firmware — cpe:2.3:o:amd:ryzen_3_5300g_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_5600ge_firmware — cpe:2.3:o:amd:ryzen_5_5600ge_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_5600g_firmware — cpe:2.3:o:amd:ryzen_5_5600g_firmware:-:*:*:*:*:*:*:*
amd ryzen_7_5700ge_firmware — cpe:2.3:o:amd:ryzen_7_5700ge_firmware:-:*:*:*:*:*:*:*
amd ryzen_7_5700g_firmware — cpe:2.3:o:amd:ryzen_7_5700g_firmware:-:*:*:*:*:*:*:*
amd athlon_silver_3050e_firmware — cpe:2.3:o:amd:athlon_silver_3050e_firmware:-:*:*:*:*:*:*:*
amd athlon_pro_3045b_firmware — cpe:2.3:o:amd:athlon_pro_3045b_firmware:-:*:*:*:*:*:*:*
amd athlon_silver_3050u_firmware — cpe:2.3:o:amd:athlon_silver_3050u_firmware:-:*:*:*:*:*:*:*
amd athlon_silver_3050c_firmware — cpe:2.3:o:amd:athlon_silver_3050c_firmware:-:*:*:*:*:*:*:*
amd athlon_pro_3145b_firmware — cpe:2.3:o:amd:athlon_pro_3145b_firmware:-:*:*:*:*:*:*:*
amd athlon_gold_3150u_firmware — cpe:2.3:o:amd:athlon_gold_3150u_firmware:-:*:*:*:*:*:*:*
amd athlon_gold_3150c_firmware — cpe:2.3:o:amd:athlon_gold_3150c_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_3250u_firmware — cpe:2.3:o:amd:ryzen_3_3250u_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_3250c_firmware — cpe:2.3:o:amd:ryzen_3_3250c_firmware:-:*:*:*:*:*:*:*
amd amd_3020e_firmware — cpe:2.3:o:amd:amd_3020e_firmware:-:*:*:*:*:*:*:*
amd amd_3015e_firmware — cpe:2.3:o:amd:amd_3015e_firmware:-:*:*:*:*:*:*:*
amd amd_3015ce_firmware — cpe:2.3:o:amd:amd_3015ce_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_2200u_firmware — cpe:2.3:o:amd:ryzen_3_2200u_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_2300u_firmware — cpe:2.3:o:amd:ryzen_3_2300u_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_2500u_firmware — cpe:2.3:o:amd:ryzen_5_2500u_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_2600h_firmware — cpe:2.3:o:amd:ryzen_5_2600h_firmware:-:*:*:*:*:*:*:*
amd ryzen_7_2700u_firmware — cpe:2.3:o:amd:ryzen_7_2700u_firmware:-:*:*:*:*:*:*:*
amd ryzen_7_2800h_firmware — cpe:2.3:o:amd:ryzen_7_2800h_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_3300u_firmware — cpe:2.3:o:amd:ryzen_3_3300u_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_3350u_firmware — cpe:2.3:o:amd:ryzen_3_3350u_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_3450u_firmware — cpe:2.3:o:amd:ryzen_5_3450u_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_3500u_firmware — cpe:2.3:o:amd:ryzen_5_3500u_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_3500c_firmware — cpe:2.3:o:amd:ryzen_5_3500c_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_3550h_firmware — cpe:2.3:o:amd:ryzen_5_3550h_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_3580u_firmware — cpe:2.3:o:amd:ryzen_5_3580u_firmware:-:*:*:*:*:*:*:*
amd ryzen_7_3700u_firmware — cpe:2.3:o:amd:ryzen_7_3700u_firmware:-:*:*:*:*:*:*:*
amd ryzen_7_3700c_firmware — cpe:2.3:o:amd:ryzen_7_3700c_firmware:-:*:*:*:*:*:*:*
amd ryzen_7_3750h_firmware — cpe:2.3:o:amd:ryzen_7_3750h_firmware:-:*:*:*:*:*:*:*
amd ryzen_7_3780u_firmware — cpe:2.3:o:amd:ryzen_7_3780u_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_pro_3200ge_firmware — cpe:2.3:o:amd:ryzen_3_pro_3200ge_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_3200g_firmware — cpe:2.3:o:amd:ryzen_3_3200g_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_pro_3200g_firmware — cpe:2.3:o:amd:ryzen_3_pro_3200g_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_pro_3350ge_firmware — cpe:2.3:o:amd:ryzen_5_pro_3350ge_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_pro_3350g_firmware — cpe:2.3:o:amd:ryzen_5_pro_3350g_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_pro_3400ge_firmware — cpe:2.3:o:amd:ryzen_5_pro_3400ge_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_pro_3400g_firmware — cpe:2.3:o:amd:ryzen_5_pro_3400g_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_3400g_firmware — cpe:2.3:o:amd:ryzen_5_3400g_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_5300u_firmware — cpe:2.3:o:amd:ryzen_3_5300u_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_5500u_firmware — cpe:2.3:o:amd:ryzen_5_5500u_firmware:-:*:*:*:*:*:*:*
amd ryzen_7_5700u_firmware — cpe:2.3:o:amd:ryzen_7_5700u_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_5400u_firmware — cpe:2.3:o:amd:ryzen_3_5400u_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_5560u_firmware — cpe:2.3:o:amd:ryzen_5_5560u_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_5600u_firmware — cpe:2.3:o:amd:ryzen_5_5600u_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_5600h_firmware — cpe:2.3:o:amd:ryzen_5_5600h_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_5600hs_firmware — cpe:2.3:o:amd:ryzen_5_5600hs_firmware:-:*:*:*:*:*:*:*
amd ryzen_7_5800u_firmware — cpe:2.3:o:amd:ryzen_7_5800u_firmware:-:*:*:*:*:*:*:*
amd ryzen_7_5800h_firmware — cpe:2.3:o:amd:ryzen_7_5800h_firmware:-:*:*:*:*:*:*:*
amd ryzen_7_5800hs_firmware — cpe:2.3:o:amd:ryzen_7_5800hs_firmware:-:*:*:*:*:*:*:*
amd ryzen_9_5900hs_firmware — cpe:2.3:o:amd:ryzen_9_5900hs_firmware:-:*:*:*:*:*:*:*
amd ryzen_9_5900hx_firmware — cpe:2.3:o:amd:ryzen_9_5900hx_firmware:-:*:*:*:*:*:*:*
amd ryzen_9_5980hs_firmware — cpe:2.3:o:amd:ryzen_9_5980hs_firmware:-:*:*:*:*:*:*:*
amd ryzen_9_5980hx_firmware — cpe:2.3:o:amd:ryzen_9_5980hx_firmware:-:*:*:*:*:*:*:*

References for CVE-2021-26393

cvelogic Threat Intelligence