CVE-2023-20588

26

FAUCET Score

CVE-2023-20588 is a division-by-zero error affecting certain AMD processors, which can lead to speculative data leakage and a loss of confidentiality. This vulnerability has a CVSS score of 5.5 (MEDIUM), indicating a low attack complexity and requiring local user privileges to exploit, with the primary impact being high confidentiality compromise. While not actively exploited in the wild and lacking public exploit code, it has garnered significant community discussion and media coverage, suggesting notable attention despite its inactive status on the CISA KEV catalog.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		10.0CPE matchmatch criteria	cpe:2.3:o:debian:debian_linux:10.0:::::::*
		11.0CPE matchmatch criteria	cpe:2.3:o:debian:debian_linux:11.0:::::::*
		12.0CPE matchmatch criteria	cpe:2.3:o:debian:debian_linux:12.0:::::::*
		Range not provided by sourceCPE matchmatch criteria	cpe:2.3:o:amd:epyc_7351p_firmware:-:::::::*
		Range not provided by sourceCPE matchmatch criteria	cpe:2.3:o:amd:epyc_7401p_firmware:-:::::::*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

Exploitability Score

1.8

Impact Score

3.6

CvssVersion

3.1

Exploit Intelligence

EPSS Score

12.40%

Probability of exploitation in next 30 days

EPSS Percentile

95.8%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.1240 is in the 100th percentile among its peer group of 15,938 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (38)

microsoftpatch availablevia msrc

Product: Windows 10 Version 1809 for 32-bit SystemsFixed in: 10.0.17763.5206

microsoftpatch availablevia msrc

Product: Windows 10 Version 1809 for x64-based SystemsFixed in: 10.0.17763.5206

microsoftpatch availablevia msrc

Product: Windows 10 Version 1809 for ARM64-based SystemsFixed in: 10.0.17763.5206

microsoftpatch availablevia msrc

Product: Windows Server 2019Fixed in: 10.0.17763.5206

microsoftpatch availablevia msrc

Product: Windows Server 2019 (Server Core installation)Fixed in: 10.0.17763.5206

microsoftpatch availablevia msrc

Product: Windows Server 2022Fixed in: 10.0.20348.2159

microsoftpatch availablevia msrc

Product: Windows Server 2022 (Server Core installation)Fixed in: 10.0.20348.2159

microsoftpatch availablevia msrc

Product: Windows Server 2022Fixed in: 10.0.20348.2144

microsoftpatch availablevia msrc

Product: Windows Server 2022 (Server Core installation)Fixed in: 10.0.20348.2144

microsoftpatch availablevia msrc

Product: Windows 11 version 21H2 for x64-based SystemsFixed in: 10.0.22000.2652

microsoftpatch availablevia msrc

Product: Windows 11 version 21H2 for ARM64-based SystemsFixed in: 10.0.22000.2652

microsoftpatch availablevia msrc

Product: Windows 10 Version 21H2 for 32-bit SystemsFixed in: 10.0.19041.3803

microsoftpatch availablevia msrc

Product: Windows 10 Version 21H2 for ARM64-based SystemsFixed in: 10.0.19041.3803

microsoftpatch availablevia msrc

Product: Windows 10 Version 21H2 for x64-based SystemsFixed in: 10.0.19041.3803

microsoftpatch availablevia msrc

Product: Windows 11 Version 22H2 for ARM64-based SystemsFixed in: 10.0.22621.2861

microsoftpatch availablevia msrc

Product: Windows 11 Version 22H2 for x64-based SystemsFixed in: 10.0.22621.2861

microsoftpatch availablevia msrc

Product: Windows 11 Version 23H2 for ARM64-based SystemsFixed in: 10.0.22621.2861

microsoftpatch availablevia msrc

Product: Windows 10 Version 22H2 for x64-based SystemsFixed in: 10.0.19045.3803

microsoftpatch availablevia msrc

Product: Windows 10 Version 22H2 for ARM64-based SystemsFixed in: 10.0.19045.3803

microsoftpatch availablevia msrc

Product: Windows 10 Version 22H2 for 32-bit SystemsFixed in: 10.0.19045.3803

microsoftpatch availablevia msrc

Product: Windows 11 Version 23H2 for x64-based SystemsFixed in: 10.0.22631.2861

microsoftpatch availablevia msrc

Product: Windows Server 2022, 23H2 Edition (Server Core installation)Fixed in: 10.0.25398.584

microsoftpatch availablevia msrc

Product: Windows 10 for 32-bit SystemsFixed in: 10.0.10240.20345

microsoftpatch availablevia msrc

Product: Windows 10 for x64-based SystemsFixed in: 10.0.10240.20345

microsoftpatch availablevia msrc

Product: Windows 10 Version 1607 for 32-bit SystemsFixed in: 10.0.14393.6529

microsoftpatch availablevia msrc

Product: Windows 10 Version 1607 for x64-based SystemsFixed in: 10.0.14393.6529

microsoftpatch availablevia msrc

Product: Windows Server 2016Fixed in: 10.0.14393.6529

microsoftpatch availablevia msrc

Product: Windows Server 2016 (Server Core installation)Fixed in: 10.0.14393.6529

microsoftpatch availablevia msrc

Product: Windows Server 2008 for 32-bit Systems Service Pack 2Fixed in: 6.0.6003.22413

microsoftpatch availablevia msrc

Product: Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)Fixed in: 6.0.6003.22413

microsoftpatch availablevia msrc

Product: Windows Server 2008 for x64-based Systems Service Pack 2Fixed in: 6.0.6003.22413

microsoftpatch availablevia msrc

Product: Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)Fixed in: 6.0.6003.22413

microsoftpatch availablevia msrc

Product: Windows Server 2008 R2 for x64-based Systems Service Pack 1Fixed in: 6.1.7601.26864

microsoftpatch availablevia msrc

Product: Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)Fixed in: 6.1.7601.26864

microsoftpatch availablevia msrc

Product: Windows Server 2012Fixed in: 6.2.9200.24614

microsoftpatch availablevia msrc

Product: Windows Server 2012 (Server Core installation)Fixed in: 6.2.9200.24614

microsoftpatch availablevia msrc

Product: Windows Server 2012 R2Fixed in: 6.3.9600.21715

microsoftpatch availablevia msrc

Product: Windows Server 2012 R2 (Server Core installation)Fixed in: 6.3.9600.21715

Vendor Advisories (2)

microsoft2023-Dec/CVE-2023-20588Important

AMD: CVE-2023-20588 AMD Speculative Leaks Security Notice

redhatCVE-2023-20588Low

hw: amd: division-by-zero may resulting in loss of confidentiality

References

lists.debian.org / debian-lts-announce/2023/10/msg00027.html

Mailing ListThird Party Advisory

lists.fedoraproject.org / archives/list/[email protected]/message/AGZCACEHT6ZZZGG36QQMGROBM4FLWYJX

Mailing List

lists.fedoraproject.org / archives/list/[email protected]/message/DIOYP4ZOBML4RCUM3MHRFZUQL445MZM3

Mailing List

lists.fedoraproject.org / archives/list/[email protected]/message/KJTUVYZMP6BNF342DS3W7XGOGXC6JPN5

Mailing List

security.netapp.com / advisory/ntap-20240531-0005

amd.com / en/corporate/product-security/bulletin/AMD-SB-7007

Vendor Advisory

debian.org / security/2023/dsa-5480

Third Party Advisory

debian.org / security/2023/dsa-5492

Third Party Advisory

openwall.com / lists/oss-security/2023/09/25/3

Mailing ListThird Party Advisory

openwall.com / lists/oss-security/2023/09/25/4

Mailing ListThird Party Advisory

openwall.com / lists/oss-security/2023/09/25/5

Mailing ListThird Party Advisory

openwall.com / lists/oss-security/2023/09/25/7

Mailing ListThird Party Advisory

openwall.com / lists/oss-security/2023/09/25/8

Mailing ListThird Party Advisory

openwall.com / lists/oss-security/2023/09/26/5

Mailing ListThird Party Advisory

openwall.com / lists/oss-security/2023/09/26/8

Mailing ListThird Party Advisory

openwall.com / lists/oss-security/2023/09/26/9

Mailing ListThird Party Advisory

openwall.com / lists/oss-security/2023/09/27/1

Mailing ListThird Party Advisory

openwall.com / lists/oss-security/2023/10/03/12

Mailing ListThird Party Advisory

openwall.com / lists/oss-security/2023/10/03/13

Mailing ListThird Party Advisory

openwall.com / lists/oss-security/2023/10/03/14

Mailing ListThird Party Advisory

openwall.com / lists/oss-security/2023/10/03/15

Mailing ListThird Party Advisory

openwall.com / lists/oss-security/2023/10/03/16

Mailing ListThird Party Advisory

openwall.com / lists/oss-security/2023/10/03/9

Mailing ListThird Party Advisory

openwall.com / lists/oss-security/2023/10/04/1

Mailing ListThird Party Advisory

openwall.com / lists/oss-security/2023/10/04/2

Mailing ListThird Party Advisory

openwall.com / lists/oss-security/2023/10/04/3

Mailing ListThird Party Advisory

openwall.com / lists/oss-security/2023/10/04/4

Mailing ListThird Party Advisory

xenbits.xen.org / xsa/advisory-439.html

Third Party Advisory