Medium severity · published Nov 14, 2023
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…
4.9
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
2G
2nd Gen AMD EPYC™ Processors · AMD
various · source: vendor
3G
3rd Gen AMD EPYC™ Processors · AMD
various · source: vendor
4G
4th Gen AMD EPYC™ Processors · AMD
various · source: vendor
AE
AMD EPYC™ Embedded 7002 · AMD
various; various · source: vendor
AE
AMD EPYC™ Embedded 7003 · AMD
various; various · source: vendor
E7
Epyc 7203 Firmware · Amd
before milanpi_1.0.0.a · source: NVD
E7
Epyc 7203p Firmware · Amd
before milanpi_1.0.0.a · source: NVD
E7
Epyc 7232p Firmware · Amd
before romepi_1.0.0.f · source: NVD
E7
Epyc 7252 Firmware · Amd
before romepi_1.0.0.f · source: NVD
E7
Epyc 7262 Firmware · Amd
before romepi_1.0.0.f · source: NVD
E7
Epyc 7272 Firmware · Amd
before romepi_1.0.0.f · source: NVD
E7
Epyc 7282 Firmware · Amd
before romepi_1.0.0.f · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26345
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26345
Vendor Advisory
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-3002
www.amd.com
https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-5001
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