CVE-2025-43903

MEDIUM

Published Apr 18, 2025 Modified Oct 6, 2025 CWE-347

Description

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

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CVSS v3.1 Score

4.3

MEDIUM

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

Weakness Type (CWE)

CWE-347 CWE-347

Affected Products

Vendor	Product	Versions
freedesktop	poppler	< 25.04.0

References

Advisories & Patches

https://gitlab.freedesktop.org/poppler/poppler/-/commit/f1b9c830f145a0042e853d6462b2f9ca4016c669

Frequently Asked Questions

What is CVE-2025-43903? +

NSSCryptoSignBackend.cc in Poppler before 25.04.0 does not verify the adbe.pkcs7.sha1 signatures on documents, resulting in potential signature forgeries. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2025-43903? +

CVE-2025-43903 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-43903? +

CVE-2025-43903 affects products from freedesktop, specifically: poppler. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-43903? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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