Is CVE-2023-31339 in the CISA KEV catalog?

No. CVE-2023-31339 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-31339?

CVE-2023-31339 has a CVSS v3 base score of 4.8 (MEDIUM).

What is the EPSS score for CVE-2023-31339?

CVE-2023-31339 has an EPSS score of 0.16% (5th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-31339?

Upgrade trusted firmware-a to 2023.2 or later.

CVE & CISA-KEV Catalog

CVE-2023-31339

MEDIUM

4.8

CVSS v3

NVD

Description

Improper input validation in ARM® Trusted Firmware used in AMD’s Zynq™ UltraScale+™) MPSoC/RFSoC may allow a privileged attacker to perform out of bound reads, potentially resulting in data leakage and denial of service.

CWE-20Improper Input Validation CWE-125Out-of-bounds Read

How to fix

Remediation Available

trusted firmware-aNVD

Affected:< 2023.2Fixed in:2023.2CVE-2023-31339derived from NVD

Affected:< 2.10.1Fixed in:2.10.1CVE-2023-31339derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredHigh

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.16%probability of exploitation in 30 days

5thpercentile

Low risk: more likely to be exploited than 5% of all known CVEs.

References

Other references1

amd.com

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-05.