Is CVE-2025-2866 in the CISA KEV catalog?

No. CVE-2025-2866 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-2866?

CVE-2025-2866 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2025-2866?

CVE-2025-2866 has an EPSS score of 0.10% (1th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-2866?

Upgrade libreoffice on debian 11 to 1:7.0.4-4+deb11u13 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2025-2866

MEDIUM

5.5

CVSS v3

NVD

Description

Improper Verification of Cryptographic Signature vulnerability in LibreOffice allows PDF Signature Spoofing by Improper Validation. In the affected versions of LibreOffice a flaw in the verification code for adbe.pkcs7.sha1 signatures could cause invalid signatures to be accepted as valid This issue affects LibreOffice: from 24.8 before < 24.8.6, from 25.2 before < 25.2.2.

CWE-347

How to fix

Remediation Available

libreofficeDebian

Fixed in:1:7.0.4-4+deb11u13CVE-2025-2866

Fixed in:4:7.4.7-1+deb12u8CVE-2025-2866

Fixed in:4:25.2.2-1CVE-2025-2866

libreofficeUbuntu

Fixed in:1:6.4.7-0ubuntu0.20.04.15USN-7504-1

Fixed in:1:7.3.7-0ubuntu0.22.04.10USN-7504-1

Fixed in:4:24.2.7-0ubuntu0.24.04.4USN-7504-1

LibreOfficeWindows application

Affected:24.8.0.1 24.8.6.0Fixed in:24.8.6.0The Document Foundation

Affected:25.2.0.1 25.2.2Fixed in:25.2.2The Document Foundation

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 RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

0.10%probability of exploitation in 30 days

1stpercentile

Low risk: more likely to be exploited than 1% of all known CVEs.

References

Vendor Advisory1

libreoffice.org

Other references1

lists.debian.org

Related Vulnerabilities

Other CWE-347 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2018-16042	Medium	6.5	82%	-	-
CVE-2025-59718	Critical	9.8	66%	KEV	Fix
CVE-2025-25292	Critical	9.8	64%	-	Fix
CVE-2021-22160	Critical	9.8	53%	-	Fix
CVE-2013-3900	Medium	5.5	45%	KEV	-
CVE-2018-0114	High	7.5	43%	-	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 2025-11-03.