Is CVE-2020-35931 actively exploited?

No active exploitation of CVE-2020-35931 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-35931 be exploited remotely?

No. CVE-2020-35931 requires local access to exploit.

What is the CVSS score of CVE-2020-35931?

CVE-2020-35931 has a CVSS score of 7.8 (HIGH).

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HIGH

CVE-2020-35931

CWE-754Published: December 31, 2020· Updated: Jun 17, 2026

7.8

CVSS v3.1

Official Description

An issue was discovered in Foxit Reader before 10.1.1 (and before 4.1.1 on macOS) and PhantomPDF before 9.7.5 and 10.x before 10.1.1 (and before 4.1.1 on macOS). An attacker can spoof a certified PDF document via an Evil Annotation Attack because the products fail to consider a null value for a Subtype entry of the Annotation dictionary, in an incremental update.

NVD Source

Technical Analysis

CVE-2020-35931 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.