Is CVE-2026-27854 actively exploited?

No active exploitation of CVE-2026-27854 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-27854 be exploited remotely?

Yes. CVE-2026-27854 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-27854?

CVE-2026-27854 has a CVSS score of 4.8 (MEDIUM).

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MEDIUM

CVE-2026-27854

CWE-416Published: March 31, 2026· Updated: Apr 1, 2026

4.8

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:0.9th

Official Description

An attacker might be able to trigger a use-after-free by sending crafted DNS queries to a DNSdist using the DNSQuestion:getEDNSOptions method in custom Lua code. In some cases DNSQuestion:getEDNSOptions might refer to a version of the DNS packet that has been modified, thus triggering a use-after-free and potentially a crash resulting in denial of service.

NVD Source

Technical Analysis

CVE-2026-27854 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

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