CVE-2023-20531
CVE-2023-20531 is a high-severity vulnerability in Amd Epyc 7h12 Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- EPSS exploit prediction: 1% (48th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-119
- Affected product: Amd Epyc 7h12 Firmware
- Published:
- Last modified:
Description
Insufficient bound checks in the SMU may allow an attacker to update the SRAM from/to address space to an invalid value potentially resulting in a denial of service.
Frequently asked questions
- What is CVE-2023-20531?
- Insufficient bound checks in the SMU may allow an attacker to update the SRAM from/to address space to an invalid value potentially resulting in a denial of service.
- How severe is CVE-2023-20531?
- CVE-2023-20531 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2023-20531 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-20531?
- CVE-2023-20531 primarily affects Amd Epyc 7h12 Firmware. In total, 50 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2023-20531?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2023-20531 published?
- CVE-2023-20531 was published on 2023-01-11 and last updated on 2026-06-17.
References
Affected products (50)
- cpe:2.3:o:amd:epyc_7h12_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7f72_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7f52_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7f32_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7742_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7702p_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7702_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7662_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7642_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7552_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7542_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7532_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7502p_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7502_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7452_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7402_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7402p_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7352_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7302p_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7302_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7282_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7272_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7262_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7252_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7232p_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7002_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7003_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_72f3_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7313_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7313p_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7343_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7373x_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_73f3_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7413_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7443_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7443p_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7453_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_74f3_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7513_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:amd:epyc_7543_firmware:*:*:*:*:*:*:*:*
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