CVE-2021-26362

A malicious or compromised UApp or ABL may be used by an attacker to issue a malformed system call which results in mapping sensitive System Management Network (SMN) registers leading to a loss of integrity and availability.

Published: 2022-05-12 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-26362 is rated Low Risk (32.4/100): CVSS High severity, with low exploitation likelihood (EPSS 0.21%). 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-2021-26362

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 0.04% 0.21% +0.16%
2 2026-04-03 0.13% 0.04% -0.08%
3 2025-11-21 — 0.13% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-26362

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.1 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H 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:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.2 [email protected]
6.6 2.0 MEDIUM
AV:L/AC:L/Au:N/C:N/I:C/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 3.9 9.2 [email protected]

Weakness enumeration for CVE-2021-26362

Affected software / configurations for CVE-2021-26362

Vendor Product Version Raw CPE
amd radeon_software — cpe:2.3:a:amd:radeon_software:-:*:*:*:*:*:*:*
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_3_5125c_firmware — cpe:2.3:o:amd:ryzen_3_5125c_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_5400u_firmware — cpe:2.3:o:amd:ryzen_3_5400u_firmware:-:*:*:*:*:*:*:*
amd athlon_3050ge_firmware — cpe:2.3:o:amd:athlon_3050ge_firmware:-:*:*:*:*:*:*:*
amd athlon_3150ge_firmware — cpe:2.3:o:amd:athlon_3150ge_firmware:-:*:*:*:*:*:*:*
amd athlon_3150g_firmware — cpe:2.3:o:amd:athlon_3150g_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_5425c_firmware — cpe:2.3:o:amd:ryzen_3_5425c_firmware:-:*:*:*:*:*:*:*
amd ryzen_3_5425u_firmware — cpe:2.3:o:amd:ryzen_3_5425u_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_2500u_firmware — cpe:2.3:o:amd:ryzen_5_2500u_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_2600_firmware — cpe:2.3:o:amd:ryzen_5_2600_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_2600h_firmware — cpe:2.3:o:amd:ryzen_5_2600h_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_2600x_firmware — cpe:2.3:o:amd:ryzen_5_2600x_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_5560u_firmware — cpe:2.3:o:amd:ryzen_5_5560u_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_5_5600u_firmware — cpe:2.3:o:amd:ryzen_5_5600u_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_5600x_firmware — cpe:2.3:o:amd:ryzen_5_5600x_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_5625c_firmware — cpe:2.3:o:amd:ryzen_5_5625c_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_5625u_firmware — cpe:2.3:o:amd:ryzen_5_5625u_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_5700g_firmware — cpe:2.3:o:amd:ryzen_5_5700g_firmware:-:*:*:*:*:*:*:*
amd ryzen_5_5700ge_firmware — cpe:2.3:o:amd:ryzen_5_5700ge_firmware:-:*:*:*:*:*:*:*
amd ryzen_7_2700u_firmware — cpe:2.3:o:amd:ryzen_7_2700u_firmware:-:*:*:*:*:*:*:*
amd ryzen_7_2700_firmware — cpe:2.3:o:amd:ryzen_7_2700_firmware:-:*:*:*:*:*:*:*
amd ryzen_7_2700x_firmware — cpe:2.3:o:amd:ryzen_7_2700x_firmware:-:*:*:*:*:*:*:*
amd ryzen_7_2800h_firmware — cpe:2.3:o:amd:ryzen_7_2800h_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_7_5800u_firmware — cpe:2.3:o:amd:ryzen_7_5800u_firmware:-:*:*:*:*:*:*:*
amd ryzen_7_5825c_firmware — cpe:2.3:o:amd:ryzen_7_5825c_firmware:-:*:*:*:*:*:*:*
amd ryzen_7_5825u_firmware — cpe:2.3:o:amd:ryzen_7_5825u_firmware:-:*:*:*:*:*:*:*
amd ryzen_9_5980hx_firmware — cpe:2.3:o:amd:ryzen_9_5980hx_firmware:-:*:*:*:*:*:*:*
amd ryzen_9_5980hs_firmware — cpe:2.3:o:amd:ryzen_9_5980hs_firmware:-:*:*:*:*:*:*:*
amd ryzen_9_5900hx_firmware — cpe:2.3:o:amd:ryzen_9_5900hx_firmware:-:*:*:*:*:*:*:*
amd ryzen_9_5900hs_firmware — cpe:2.3:o:amd:ryzen_9_5900hs_firmware:-:*:*:*:*:*:*:*

References for CVE-2021-26362

cvelogic Threat Intelligence