CVE-2021-39543
5.5 · MEDIUMOverview
CVE-2021-39543 is a medium-severity vulnerability affecting pdftools_project pdftools. It was published on September 20, 2021 and has a CVSS 3.1 base score of 5.5 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from pdftools_project. Update pdftools to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| pdftools_project | pdftools | 0 | Affected |
Frequently Asked Questions
What is CVE-2021-39543?
CVE-2021-39543 is a medium-severity vulnerability affecting pdftools_project pdftools. It was published on September 20, 2021 and has a CVSS 3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2021-39543?
This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-39543?
Check the references section for vendor advisories and patches from pdftools_project. Update pdftools to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-39543?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-39543 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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