Is CVE-2026-3777 actively exploited?

No active exploitation of CVE-2026-3777 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-3777 be exploited remotely?

No. CVE-2026-3777 requires local access to exploit.

What is the CVSS score of CVE-2026-3777?

CVE-2026-3777 has a CVSS score of 5.5 (MEDIUM).

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MEDIUM

CVE-2026-3777

CWE-416Published: April 1, 2026· Updated: Apr 1, 2026

5.5

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:3.0th

Official Description

The application does not properly validate the lifetime and validity of internal view cache pointers after JavaScript changes the document zoom and page state. When a script modifies the zoom property and then triggers a page change, the original view object may be destroyed while stale pointers are still kept and later dereferenced, which under crafted JavaScript and document structures can lead to a use-after-free condition and potentially allow arbitrary code execution.

NVD Source

Technical Analysis

CVE-2026-3777 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 availability disruption (denial of service), with a CVSS base score of 5.5.

From a weakness classification perspective (CWE-416): Use-after-free vulnerabilities involve accessing memory after it has been freed, often enabling arbitrary code execution.