CVE-2021-39543

5.5 mediumEPSS 0.6%

Medium (5.5) in pdftools project pdftools. EPSS 0.6% chance of exploitation in the next 30 days.

An issue was discovered in pdftools through 20200714. A NULL pointer dereference exists in the function Analyze::AnalyzeRoot() located in analyze.cpp. It allows an attacker to cause Denial of Service.

Severity

CVSS 3.1

5.5 medium

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

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 50% of CVEs (scores of 2026-10-31)
CWE: CWE-476
Published: 2021-09-20
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

pdftools_project:pdftools

References

https://github.com/leonhad/pdftools/issues/1
https://github.com/leonhad/pdftools/issues/1

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