CVE-2023-20593

CVE-2023-20593 is a medium-severity vulnerability in Amd Ryzen 3 3100 Firmware with a CVSS 3.x base score of 5.5. 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-209.

Key facts

• Severity: Medium (CVSS 3.x base score 5.5)
• EPSS exploit prediction: 6% (92nd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-209
• Affected product: Amd Ryzen 3 3100 Firmware
• Published: 2023-07-24
• Last modified: 2026-06-17

Description

An issue in “Zen 2” CPUs, under specific microarchitectural circumstances, may allow an attacker to potentially access sensitive information.

Frequently asked questions

What is CVE-2023-20593?

An issue in “Zen 2” CPUs, under specific microarchitectural circumstances, may allow an attacker to potentially access sensitive information.

How severe is CVE-2023-20593?

CVE-2023-20593 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-2023-20593 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-20593?

CVE-2023-20593 primarily affects Amd Ryzen 3 3100 Firmware. In total, 76 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-20593?

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

When was CVE-2023-20593 published?

CVE-2023-20593 was published on 2023-07-24 and last updated on 2026-06-17.

References

• http://seclists.org/fulldisclosure/2023/Jul/43
• http://www.openwall.com/lists/oss-security/2023/07/24/3
• http://www.openwall.com/lists/oss-security/2023/07/25/1
• http://www.openwall.com/lists/oss-security/2023/07/25/12
• http://www.openwall.com/lists/oss-security/2023/07/25/13
• http://www.openwall.com/lists/oss-security/2023/07/25/14
• http://www.openwall.com/lists/oss-security/2023/07/25/15
• http://www.openwall.com/lists/oss-security/2023/07/25/16
• http://www.openwall.com/lists/oss-security/2023/07/25/17
• http://www.openwall.com/lists/oss-security/2023/07/25/5
• http://www.openwall.com/lists/oss-security/2023/07/25/6
• http://www.openwall.com/lists/oss-security/2023/07/26/1
• http://www.openwall.com/lists/oss-security/2023/07/31/2
• http://www.openwall.com/lists/oss-security/2023/08/08/6
• http://www.openwall.com/lists/oss-security/2023/08/08/7
• http://www.openwall.com/lists/oss-security/2023/08/08/8
• http://www.openwall.com/lists/oss-security/2023/08/16/4
• http://www.openwall.com/lists/oss-security/2023/08/16/5
• http://www.openwall.com/lists/oss-security/2023/09/22/11
• http://www.openwall.com/lists/oss-security/2023/09/22/9
• http://www.openwall.com/lists/oss-security/2023/09/25/4
• http://www.openwall.com/lists/oss-security/2023/09/25/7
• http://xenbits.xen.org/xsa/advisory-433.html
• https://cmpxchg8b.com/zenbleed.html
• https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html
• https://lists.debian.org/debian-lts-announce/2023/07/msg00033.html
• https://lists.debian.org/debian-lts-announce/2023/08/msg00001.html
• https://lists.fedoraproject.org/archives/list/[email protected]/message/CP6WQO3CDPLE5O635N7TAL5KCZ6HZ4FE/
• https://lists.fedoraproject.org/archives/list/[email protected]/message/HKKYIK2EASDNUV4I7EFJKNBVO3KCKGRR/
• https://lists.fedoraproject.org/archives/list/[email protected]/message/SD2G74BXS2SWOE3FIQJ6X76S3A7PDGML/

Affected products (76)

• cpe:2.3:o:xen:xen:4.14.0:*:*:*:*:*:x86:*
• cpe:2.3:o:xen:xen:4.15.0:*:*:*:*:*:x86:*
• cpe:2.3:o:xen:xen:4.16.0:*:*:*:*:*:x86:*
• cpe:2.3:o:xen:xen:4.17.0:*:*:*:*:*:x86:*
• 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:ryzen_3_3100_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_3_3300x_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_3500_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_3500x_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_3600_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_3600x_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_3600xt_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_3700x_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_3800x_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_3800xt_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_3900_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_3900x_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_3900xt_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_3950x_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_9_pro_3900_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_threadripper_pro_3995wx_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_threadripper_pro_3975wx_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_threadripper_pro_3955wx_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_threadripper_pro_3945wx_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_threadripper_3990x_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_threadripper_3970x_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_threadripper_3960x_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_4700g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_7_4700ge_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_4600g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_4600ge_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_3_4300g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_3_4300ge_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_3_pro_4450u_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_3_pro_4350ge_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_3_pro_4350g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_3_pro_4200g_firmware:-:*:*:*:*:*:*:*
• cpe:2.3:o:amd:ryzen_5_pro_4650ge_firmware:-:*:*:*:*:*:*:*

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