CVE-2023-20588

CVE-2023-20588 is a medium-severity vulnerability in Amd Epyc 7351p Firmware with a CVSS 3.x base score of 5.5. Its EPSS exploit-prediction score of 12% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-369.

Key facts

• Severity: Medium (CVSS 3.x base score 5.5)
• EPSS exploit prediction: 12% (96th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-369
• Affected product: Amd Epyc 7351p Firmware
• Published: 2023-08-08
• Last modified: 2026-06-17

Description

A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality.

Frequently asked questions

What is CVE-2023-20588?

A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality.

How severe is CVE-2023-20588?

CVE-2023-20588 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2023-20588 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 12% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-20588?

CVE-2023-20588 primarily affects Amd Epyc 7351p Firmware. In total, 53 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-20588?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-20588 published?

CVE-2023-20588 was published on 2023-08-08 and last updated on 2026-06-17.

References

• http://www.openwall.com/lists/oss-security/2023/09/25/3
• http://www.openwall.com/lists/oss-security/2023/09/25/4
• http://www.openwall.com/lists/oss-security/2023/09/25/5
• http://www.openwall.com/lists/oss-security/2023/09/25/7
• http://www.openwall.com/lists/oss-security/2023/09/25/8
• http://www.openwall.com/lists/oss-security/2023/09/26/5
• http://www.openwall.com/lists/oss-security/2023/09/26/8
• http://www.openwall.com/lists/oss-security/2023/09/26/9
• http://www.openwall.com/lists/oss-security/2023/09/27/1
• http://www.openwall.com/lists/oss-security/2023/10/03/12
• http://www.openwall.com/lists/oss-security/2023/10/03/13
• http://www.openwall.com/lists/oss-security/2023/10/03/14
• http://www.openwall.com/lists/oss-security/2023/10/03/15
• http://www.openwall.com/lists/oss-security/2023/10/03/16
• http://www.openwall.com/lists/oss-security/2023/10/03/9
• http://www.openwall.com/lists/oss-security/2023/10/04/1
• http://www.openwall.com/lists/oss-security/2023/10/04/2
• http://www.openwall.com/lists/oss-security/2023/10/04/3
• http://www.openwall.com/lists/oss-security/2023/10/04/4
• http://xenbits.xen.org/xsa/advisory-439.html
• https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
• https://lists.fedoraproject.org/archives/list/[email protected]/message/AGZCACEHT6ZZZGG36QQMGROBM4FLWYJX/
• https://lists.fedoraproject.org/archives/list/[email protected]/message/DIOYP4ZOBML4RCUM3MHRFZUQL445MZM3/
• https://lists.fedoraproject.org/archives/list/[email protected]/message/KJTUVYZMP6BNF342DS3W7XGOGXC6JPN5/
• https://security.netapp.com/advisory/ntap-20240531-0005/
• https://www.amd.com/en/corporate/product-security/bulletin/AMD-SB-7007
• https://www.debian.org/security/2023/dsa-5480
• https://www.debian.org/security/2023/dsa-5492

Affected products (53)

• cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
• cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*
• cpe:2.3:o:amd:epyc_7351p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:epyc_7401p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:epyc_7551p_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:epyc_7251_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:epyc_7261_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:epyc_7281_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:epyc_7301_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:epyc_7351_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:epyc_7371_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:epyc_7401_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:epyc_7451_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:epyc_7501_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:epyc_7551_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:epyc_7571_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:epyc_7601_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_pro_3400g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_3400g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_pro_3400ge_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_pro_3350g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_pro_3350ge_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_3_pro_3200g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_3_3200g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_3_3200ge_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_3_pro_3200ge_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:athlon_pro_300ge_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:athlon_gold_3150ge_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:athlon_gold_pro_3150ge_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:athlon_gold_3150g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:athlon_gold_pro_3150g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:athlon_silver_3050ge_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:athlon_silver_pro_3125ge_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:xen:xen:-:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
• cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:*:*

More vulnerabilities in Amd Epyc 7351p Firmware

• CVE-2023-20520 — Critical (CVSS 9.8): Improper access control settings in ASP Bootloader may allow an attacker to corrupt the return address causing…
• CVE-2021-46756 — Critical (CVSS 9.1): Insufficient validation of inputs in SVC_MAP_USER_STACK in the ASP (AMD Secure Processor) bootloader may allow…
• CVE-2021-26340 — High (CVSS 8.4): A malicious hypervisor in conjunction with an unprivileged attacker process inside an SEV/SEV-ES guest VM may fail to…
• CVE-2021-26335 — High (CVSS 7.8): Improper input and range checking in the AMD Secure Processor (ASP) boot loader image header may allow an attacker to…
• CVE-2021-26331 — High (CVSS 7.8): AMD System Management Unit (SMU) contains a potential issue where a malicious user may be able to manipulate mailbox…
• CVE-2020-12944 — High (CVSS 7.8): Insufficient validation of BIOS image length by ASP Firmware could lead to arbitrary code execution.

All CVEs affecting Amd Epyc 7351p Firmware →

Other CWE-369 (Divide By Zero) vulnerabilities

• CVE-2021-32494 — Critical (CVSS 10.0): Radare2 has a division by zero vulnerability in Mach-O parser's rebase_buffer function. This allow attackers to create…
• CVE-2017-11720 — Critical (CVSS 9.8): There is a division-by-zero vulnerability in LAME 3.99.5, caused by a malformed input file.
• CVE-2020-20892 — High (CVSS 8.8): An issue was discovered in function filter_frame in libavfilter/vf_lenscorrection.c in Ffmpeg 4.2.1, allows attackers…
• CVE-2025-4637 — High (CVSS 8.7): Divide By Zero vulnerability in davisking dlib allows remote attackers to cause a denial of service via a crafted…
• CVE-2026-37232 — High (CVSS 8.6): An issue was discovered in OpenAirInterface5G 2.4.0 (nr-softmodem) in the E2SM-KPM RAN Function's PRB utilization…
• CVE-2024-26945 — High (CVSS 8.4): In the Linux kernel, the following vulnerability has been resolved: crypto: iaa - Fix nr_cpus < nr_iaa case If…

Browse all CWE-369 (Divide By Zero) vulnerabilities →