Is CVE-2026-5383 actively exploited?

No active exploitation of CVE-2026-5383 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-5383 be exploited remotely?

Yes. CVE-2026-5383 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-5383?

CVE-2026-5383 has a CVSS score of 4.4 (MEDIUM).

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MEDIUM

CVE-2026-5383

CWE-863Published: April 7, 2026· Updated: Apr 8, 2026

4.4

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:9.5th

Official Description

An issue that could allow access to Explorer groups from outside of the authorized organization scope has been resolved. This is an instance of CWE-863: Incorrect Authorization, and has an estimated CVSS score of CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L (4.4 Medium). This issue was fixed in version 4.0.260208.0 of the runZero Explorer.

NVD Source

Technical Analysis

CVE-2026-5383 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.