Is CVE-2025-2884 in the CISA KEV catalog?

No. CVE-2025-2884 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-2884?

CVE-2025-2884 has a CVSS v3 base score of 6.6 (MEDIUM).

What is the EPSS score for CVE-2025-2884?

CVE-2025-2884 has an EPSS score of 0.20% (10th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-2884?

Install KB5066793 for Windows 11 Version 22H2. Fixes are available for 8 affected products.

CVE & CISA-KEV Catalog

CVE-2025-2884

MEDIUM

6.6

CVSS v3

NVD

Description

TCG TPM2.0 Reference implementation's CryptHmacSign helper function is vulnerable to Out-of-Bounds read due to the lack of validation the signature scheme with the signature key's algorithm. See Errata Revision 1.83 and advisory TCGVRT0009 for TCG standard TPM2.0

CWE-125Out-of-bounds Read

How to fix

Remediation Available

Windows 11 Version 22H2Windows

Install:KB5066793Microsoft

Windows 11 Version 23H2Windows

Install:KB5066793Microsoft

Windows 11 Version 24H2Windows

Install:KB5066835Microsoft

Windows 11 Version 25H2Windows

Install:KB5066835Microsoft

Windows 11 version 26H1Windows

Install:KB5077179Microsoft

Windows Server 2022, 23H2 Edition (Server Core installation)Windows

Install:KB5066780Microsoft

Windows Server 2025Windows

Install:KB5066835Microsoft

Windows Server 2025 (Server Core installation)Windows

Install:KB5066835Microsoft

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 RequiredLow

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.20%probability of exploitation in 30 days

10thpercentile

Low risk: more likely to be exploited than 10% of all known CVEs.

References

Other references8

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0160	High	7.5	100%	KEV	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2021-4034	High	7.8	95%	KEV	Fix
CVE-2023-21769	High	7.5	92%	-	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2020-8794	Critical	9.8	89%	-	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 2026-04-14.