Is CVE-2025-43903 in the CISA KEV catalog?

No. CVE-2025-43903 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-43903?

CVE-2025-43903 has a CVSS v3 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2025-43903?

CVE-2025-43903 has an EPSS score of 0.09% (1th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-43903?

Upgrade poppler on debian 13 to 25.03.0-4 or later. Fixes are available for 7 affected products.

CVE & CISA-KEV Catalog

CVE-2025-43903

MEDIUM

4.3

CVSS v3

NVD

Description

NSSCryptoSignBackend.cc in Poppler before 25.04.0 does not verify the adbe.pkcs7.sha1 signatures on documents, resulting in potential signature forgeries.

CWE-347

How to fix

Remediation Available

popplerDebian

Fixed in:25.03.0-4CVE-2025-43903

libpoppler118Ubuntu

Fixed in:22.02.0-2ubuntu0.8USN-7471-1

libpoppler134Ubuntu

Fixed in:24.02.0-1ubuntu9.4USN-7471-1

libpoppler73Ubuntu

Fixed in:0.62.0-2ubuntu2.14+esm6USN-7471-1

libpoppler97Ubuntu

Fixed in:0.86.1-0ubuntu1.7USN-7471-1

popplerUbuntu

Fixed in:0.62.0-2ubuntu2.14+esm6USN-7471-1

Fixed in:0.86.1-0ubuntu1.7USN-7471-1

Fixed in:22.02.0-2ubuntu0.8USN-7471-1

Fixed in:24.02.0-1ubuntu9.4USN-7471-1

poppler-utilsUbuntu

Fixed in:0.62.0-2ubuntu2.14+esm6USN-7471-1

Fixed in:0.86.1-0ubuntu1.7USN-7471-1

Fixed in:22.02.0-2ubuntu0.8USN-7471-1

Fixed in:24.02.0-1ubuntu9.4USN-7471-1

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 InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.09%probability of exploitation in 30 days

1stpercentile

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

References

Patch1

gitlab.freedesktop.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 2025-10-06.