Vulnerability · 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.
Published Apr 18, 2025 · catalog updated Apr 21, 2025 · Freedesktop
Check if you run it
No confirmed exploitation is on record for CVE-2025-43903. EPSS is 0.11%. Act only if a listed version of Freedesktop is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Medium4.3
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.11%
- Remediation
- Version ranges on file
- Affected products
- vendor Freedesktop poppler 0 <25.04.0
NSSCryptoSignBackend.cc in Poppler before 25.04.0 does not verify the adbe.pkcs7.sha1 signatures on documents, resulting in potential signature forgeries.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- vendor Freedesktop poppler 0 <25.04.00 <25.04.0
How to fix CVE-2025-43903
Recommended remediation
Affected version ranges suggest a fixed boundary. Verify against the vendor advisory for your release.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2025-43903. EPSS is 0.11%. Act only if a listed version of Freedesktop is installed.
Which versions are affected?
Compare what you have installed with Freedesktop poppler 0 <25.04.0 0 <25.04.0. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.11%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Apr 18, 2025 · EUVD
Detected
NSSCryptoSignBackend.cc in Poppler before 25.04.0 does not verify the adbe.pkcs7.sha1 signatures on documents, resulting in potential signature forgeries.
Apr 21, 2025 · EUVD
Updated
NSSCryptoSignBackend.cc in Poppler before 25.04.0 does not verify the adbe.pkcs7.sha1 signatures on documents, resulting in potential signature forgeries.
Sources
- CVE.orgVulnerability recordCVE-2025-43903
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2025-43903
30-day exploitation probability 0.1%
first.org - EUVDVulnerability recordEUVD-2025-11892
NSSCryptoSignBackend.cc in Poppler before 25.04.0 does not verify the adbe.pkcs7.sha1 signatures on documents, resulting in potential signature forgeries.
euvd.enisa.europa.eu
References
Freshness
Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.