CVE-2021-26345

Failure to validate the value in APCB may allow a privileged attacker to tamper with the APCB token to force an out-of-bounds memory read potentially resulting in a denial of service.

Published: 2023-11-14 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-26345 is rated Low Risk (9.8/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.03%). Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.

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-2021-26345

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 2025-11-21 0.15% 0.03% -0.12%
2 2025-11-18 0.03% 0.15% +0.12%
3 2025-03-17 — 0.03% —

Full EPSS history (5 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-26345

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
1.9 3.1 LOW
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:L 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:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:H)
They need powerful rights—admin, root, or similar—before this pays off.
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:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 0.5 1.4 [email protected]
4.9 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
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:H)
They need powerful rights—admin, root, or similar—before this pays off.
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:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.2 3.6 [email protected]

Weakness enumeration for CVE-2021-26345

OS Trackers for CVE-2021-26345

vendor priority summary link
suse high — https://www.suse.com/security/cve/CVE-2021-26345/

Affected software / configurations for CVE-2021-26345

Vendor Product Version Raw CPE
amd epyc_7h12_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7h12_firmware:*:*:*:*:*:*:*:*
amd epyc_7f72_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7f72_firmware:*:*:*:*:*:*:*:*
amd epyc_7f52_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7f52_firmware:*:*:*:*:*:*:*:*
amd epyc_7f32_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7f32_firmware:*:*:*:*:*:*:*:*
amd epyc_7742_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7742_firmware:*:*:*:*:*:*:*:*
amd epyc_7702p_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7702p_firmware:*:*:*:*:*:*:*:*
amd epyc_7702_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7702_firmware:*:*:*:*:*:*:*:*
amd epyc_7662_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7662_firmware:*:*:*:*:*:*:*:*
amd epyc_7642_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7642_firmware:*:*:*:*:*:*:*:*
amd epyc_7552_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7552_firmware:*:*:*:*:*:*:*:*
amd epyc_7542_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7542_firmware:*:*:*:*:*:*:*:*
amd epyc_7532_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7532_firmware:*:*:*:*:*:*:*:*
amd epyc_7502p_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7502p_firmware:*:*:*:*:*:*:*:*
amd epyc_7502_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7502_firmware:*:*:*:*:*:*:*:*
amd epyc_7452_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7452_firmware:*:*:*:*:*:*:*:*
amd epyc_7402p_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7402p_firmware:*:*:*:*:*:*:*:*
amd epyc_7402_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7402_firmware:*:*:*:*:*:*:*:*
amd epyc_7352_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7352_firmware:*:*:*:*:*:*:*:*
amd epyc_7302p_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7302p_firmware:*:*:*:*:*:*:*:*
amd epyc_7302_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7302_firmware:*:*:*:*:*:*:*:*
amd epyc_7282_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7282_firmware:*:*:*:*:*:*:*:*
amd epyc_7272_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7272_firmware:*:*:*:*:*:*:*:*
amd epyc_7262_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7262_firmware:*:*:*:*:*:*:*:*
amd epyc_7252_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7252_firmware:*:*:*:*:*:*:*:*
amd epyc_7232p_firmware < romepi_1.0.0.f cpe:2.3:o:amd:epyc_7232p_firmware:*:*:*:*:*:*:*:*
amd epyc_7203_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7203_firmware:*:*:*:*:*:*:*:*
amd epyc_7203p_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7203p_firmware:*:*:*:*:*:*:*:*
amd epyc_72f3_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_72f3_firmware:*:*:*:*:*:*:*:*
amd epyc_7303_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7303_firmware:*:*:*:*:*:*:*:*
amd epyc_7303p_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7303p_firmware:*:*:*:*:*:*:*:*
amd epyc_7313_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7313_firmware:*:*:*:*:*:*:*:*
amd epyc_7313p_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7313p_firmware:*:*:*:*:*:*:*:*
amd epyc_7343_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7343_firmware:*:*:*:*:*:*:*:*
amd epyc_73f3_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_73f3_firmware:*:*:*:*:*:*:*:*
amd epyc_7373x_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7373x_firmware:*:*:*:*:*:*:*:*
amd epyc_7413_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7413_firmware:*:*:*:*:*:*:*:*
amd epyc_7443_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7443_firmware:*:*:*:*:*:*:*:*
amd epyc_7443p_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7443p_firmware:*:*:*:*:*:*:*:*
amd epyc_74f3_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_74f3_firmware:*:*:*:*:*:*:*:*
amd epyc_7453_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7453_firmware:*:*:*:*:*:*:*:*
amd epyc_7473x_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7473x_firmware:*:*:*:*:*:*:*:*
amd epyc_7513_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7513_firmware:*:*:*:*:*:*:*:*
amd epyc_7543_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7543_firmware:*:*:*:*:*:*:*:*
amd epyc_7543p_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7543p_firmware:*:*:*:*:*:*:*:*
amd epyc_75f3_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_75f3_firmware:*:*:*:*:*:*:*:*
amd epyc_7573x_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7573x_firmware:*:*:*:*:*:*:*:*
amd epyc_7643_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7643_firmware:*:*:*:*:*:*:*:*
amd epyc_7773x_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7773x_firmware:*:*:*:*:*:*:*:*
amd epyc_7643p_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7643p_firmware:*:*:*:*:*:*:*:*
amd epyc_7663_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7663_firmware:*:*:*:*:*:*:*:*
amd epyc_7663p_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7663p_firmware:*:*:*:*:*:*:*:*
amd epyc_7713_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7713_firmware:*:*:*:*:*:*:*:*
amd epyc_7713p_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7713p_firmware:*:*:*:*:*:*:*:*
amd epyc_7763_firmware < milanpi_1.0.0.a cpe:2.3:o:amd:epyc_7763_firmware:*:*:*:*:*:*:*:*
amd epyc_8024pn_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_8024pn_firmware:*:*:*:*:*:*:*:*
amd epyc_8024p_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_8024p_firmware:*:*:*:*:*:*:*:*
amd epyc_8124pn_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_8124pn_firmware:*:*:*:*:*:*:*:*
amd epyc_8124p_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_8124p_firmware:*:*:*:*:*:*:*:*
amd epyc_8224pn_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_8224pn_firmware:*:*:*:*:*:*:*:*
amd epyc_8224p_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_8224p_firmware:*:*:*:*:*:*:*:*
amd epyc_8324pn_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_8324pn_firmware:*:*:*:*:*:*:*:*
amd epyc_8324p_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_8324p_firmware:*:*:*:*:*:*:*:*
amd epyc_8434pn_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_8434pn_firmware:*:*:*:*:*:*:*:*
amd epyc_8434p_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_8434p_firmware:*:*:*:*:*:*:*:*
amd epyc_8534pn_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_8534pn_firmware:*:*:*:*:*:*:*:*
amd epyc_8534p_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_8534p_firmware:*:*:*:*:*:*:*:*
amd epyc_9734_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_9734_firmware:*:*:*:*:*:*:*:*
amd epyc_9754s_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_9754s_firmware:*:*:*:*:*:*:*:*
amd epyc_9754_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_9754_firmware:*:*:*:*:*:*:*:*
amd epyc_9184x_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_9184x_firmware:*:*:*:*:*:*:*:*
amd epyc_9384x_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_9384x_firmware:*:*:*:*:*:*:*:*
amd epyc_9684x_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_9684x_firmware:*:*:*:*:*:*:*:*
amd epyc_9124_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_9124_firmware:*:*:*:*:*:*:*:*
amd epyc_9174f_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_9174f_firmware:*:*:*:*:*:*:*:*
amd epyc_9224_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_9224_firmware:*:*:*:*:*:*:*:*
amd epyc_9254_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_9254_firmware:*:*:*:*:*:*:*:*
amd epyc_9274f_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_9274f_firmware:*:*:*:*:*:*:*:*
amd epyc_9334_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_9334_firmware:*:*:*:*:*:*:*:.
amd epyc_9354_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_9354_firmware:*:*:*:*:*:*:*:*
amd epyc_9354p_firmware < genoapi_1.0.0.0 cpe:2.3:o:amd:epyc_9354p_firmware:*:*:*:*:*:*:*:*

References for CVE-2021-26345

cvelogic Threat Intelligence