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CVE-2023-31346

19
FAUCET Score

CVE-2023-31346 is a medium-severity vulnerability affecting AMD SEV Firmware, stemming from a failure to properly initialize memory. This flaw allows a highly privileged attacker to access stale data from other guest virtual machines. While the CVSS score is 6.0, indicating a local attack with high confidentiality impact, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< milanpi_1.0.0.cCPE matchmatch criteria
cpe:2.3:o:amd:epyc_7773x_firmware:*:*:*:*:*:*:*:*
< milanpi_1.0.0.cCPE matchmatch criteria
cpe:2.3:o:amd:epyc_7763_firmware:*:*:*:*:*:*:*:*
< milanpi_1.0.0.cCPE matchmatch criteria
cpe:2.3:o:amd:epyc_7713_firmware:*:*:*:*:*:*:*:*
< milanpi_1.0.0.cCPE matchmatch criteria
cpe:2.3:o:amd:epyc_7713p_firmware:*:*:*:*:*:*:*:*
< milanpi_1.0.0.cCPE matchmatch criteria
cpe:2.3:o:amd:epyc_7663_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.0MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.5
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.31%
Probability of exploitation in next 30 days
EPSS Percentile
23.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0031 is in the 70th percentile among its peer group of 3,720 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

No media coverage found for this CVE.

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 (13)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: linux-firmware-0:20240610-122.git90df68d2.el8_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.2 Advanced Update SupportFixed in: linux-firmware-0:20240715-102.2.git4c8fb21e.el8_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportFixed in: linux-firmware-0:20240610-106.1.git90df68d2.el8_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.4 Telecommunications Update ServiceFixed in: linux-firmware-0:20240610-106.1.git90df68d2.el8_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.4 Update Services for SAP SolutionsFixed in: linux-firmware-0:20240610-106.1.git90df68d2.el8_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update SupportFixed in: linux-firmware-0:20240610-114.1.git90df68d2.el8_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Telecommunications Update ServiceFixed in: linux-firmware-0:20240610-114.1.git90df68d2.el8_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.6 Update Services for SAP SolutionsFixed in: linux-firmware-0:20240610-114.1.git90df68d2.el8_6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8.8 Extended Update SupportFixed in: linux-firmware-0:20240610-118.1.git90df68d2.el8_8
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: linux-firmware-0:20240603-143.1.el9_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9.2 Extended Update SupportFixed in: linux-firmware-0:20240603-138.1.el9_2
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: linux-firmware
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: linux-firmware

Vendor Advisories (1)

redhatCVE-2023-31346Moderate

kernel: Reserved fields in guest message responses may not be zero initialized

Dec 19, 2023

References

amd.com / en/corporate/product-security/bulletin/AMD-SB-3007
Vendor Advisory