Attacker Value
Unknown
0
CVE-2021-26344
0
CVE ID
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CVE-2021-26344
(Last updated December 18, 2024) ▾
MITRE ATT&CK
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Collection
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Command and Control
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Credential Access
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Defense Evasion
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Discovery
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Execution
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Exfiltration
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Impact
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Initial Access
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Lateral Movement
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Persistence
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Privilege Escalation
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What makes this of low-value to an attacker?
Description
An out of bounds memory write when processing the AMD
PSP1 Configuration Block (APCB) could allow an attacker with access the ability
to modify the BIOS image, and the ability to sign the resulting image, to
potentially modify the APCB block resulting in arbitrary code execution.
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CVSS V3 Severity and Metrics
Data provided by the National Vulnerability Database (NVD)
Base Score:
8.2 High
Impact Score:
6
Exploitability Score:
1.5
Attack Vector (AV):
Local
Attack Complexity (AC):
Low
Privileges Required (PR):
High
User Interaction (UI):
None
Scope (S):
Changed
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High
General Information
Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
AMD EPYC™ 7001 Series Processors not down converted
AMD EPYC™ 7002 Series Processors not down converted
AMD EPYC™ 7003 Series Processors not down converted
AMD Ryzen™ 3000 Series Desktop Processors not down converted
AMD Ryzen™ 5000 Series Desktop Processors not down converted
AMD Ryzen™ 5000 Series Desktop Processor with Radeon™ Graphics not down converted
AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics not down converted
AMD Ryzen™ 4000 Series Desktop Processors with Radeon™ Graphics not down converted
AMD Ryzen™ Threadripper™ 3000 Series Processors not down converted
AMD Ryzen™ Threadripper™ PRO 5000WX Processors not down converted
AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics not down converted
AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics not down converted
AMD Ryzen™ 3000 Series Mobile Processors with Radeon™ Graphics not down converted
AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics not down converted
AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics not down converted
AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics not down converted
AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics not down converted
AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics not down converted
AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics not down converted
AMD Ryzen™ 5000 Series Processors with Radeon™ Graphics not down converted
AMD Ryzen™ 3000 Series Processors with Radeon™ Graphics not down converted
AMD EPYC™ Embedded 7002 Series Processors not down converted
AMD EPYC™ Embedded 3000 Series Processors not down converted
AMD EPYC™ Embedded 7003 Series Processors not down converted
AMD Ryzen™ Embedded R1000 Series Processors not down converted
AMD Ryzen™ Embedded R2000 Series Processors not down converted
AMD Ryzen™ Embedded 5000 Series Processors not down converted
AMD Ryzen™ Embedded V1000 Series Processors not down converted
AMD Ryzen™ Embedded V2000 Series Processors not down converted
AMD Ryzen™ Embedded V3000 Series Processors not down converted
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown
Vendors
Products
- epyc 7001 firmware -,
- epyc 7203 firmware,
- epyc 7203p firmware,
- epyc 7232p firmware,
- epyc 7251 firmware -,
- epyc 7252 firmware,
- epyc 7261 firmware -,
- epyc 7262 firmware,
- epyc 7272 firmware,
- epyc 7281 firmware -,
- epyc 7282 firmware,
- epyc 72f3 firmware,
- epyc 7301 firmware -,
- epyc 7302 firmware,
- epyc 7302p firmware,
- epyc 7303 firmware,
- epyc 7303p firmware,
- epyc 7313 firmware,
- epyc 7313p firmware,
- epyc 7343 firmware,
- epyc 7351 firmware -,
- epyc 7351p firmware -,
- epyc 7352 firmware,
- epyc 7371 firmware -,
- epyc 7373x firmware,
- epyc 73f3 firmware,
- epyc 7401 firmware -,
- epyc 7401p firmware -,
- epyc 7402 firmware,
- epyc 7402p firmware,
- epyc 7413 firmware,
- epyc 7443 firmware,
- epyc 7443p firmware,
- epyc 7451 firmware -,
- epyc 7452 firmware,
- epyc 7453 firmware,
- epyc 7473x firmware,
- epyc 74f3 firmware,
- epyc 7501 firmware -,
- epyc 7502 firmware,
- epyc 7502p firmware,
- epyc 7513 firmware,
- epyc 7532 firmware,
- epyc 7542 firmware,
- epyc 7543 firmware,
- epyc 7543p firmware,
- epyc 7551 firmware -,
- epyc 7551p firmware -,
- epyc 7552 firmware,
- epyc 7573x firmware,
- epyc 75f3 firmware,
- epyc 7601 firmware -,
- epyc 7642 firmware,
- epyc 7643 firmware,
- epyc 7643p firmware,
- epyc 7662 firmware,
- epyc 7663 firmware,
- epyc 7663p firmware,
- epyc 7702 firmware,
- epyc 7702p firmware,
- epyc 7713 firmware,
- epyc 7713p firmware,
- epyc 7742 firmware,
- epyc 7763 firmware,
- epyc 7773x firmware,
- epyc 7f32 firmware,
- epyc 7f52 firmware,
- epyc 7f72 firmware,
- epyc 7h12 firmware
References
Additional Info
Authenticated
Unknown
Exploitable
Unknown
Reliability
Unknown
Stability
Unknown
Available Mitigations
Unknown
Shelf Life
Unknown
Userbase/Installbase
Unknown
Patch Effectiveness
Unknown
Rapid7
Technical Analysis
Report as Emergent Threat Response
Report as Zero-day Exploit
Report as Exploited in the Wild
CVE ID
AttackerKB requires a CVE ID in order to pull vulnerability data and references from the CVE list and the National Vulnerability Database. If available, please supply below:
