Is CVE-2026-44296 actively exploited?

No active exploitation of CVE-2026-44296 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-44296 be exploited remotely?

Yes. CVE-2026-44296 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-44296?

CVE-2026-44296 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2026-44296

HIGH

CVE-2026-44296

CWE-400Published: May 12, 2026· Updated: May 13, 2026

7.5

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:12.1th

Official Description

Deskflow is a keyboard and mouse sharing app. Prior to 1.26.0.167, a remote, unauthenticated denial of service (DoS) vulnerability affects Deskflow servers running with TLS enabled (the default). When any TCP peer connects to the listening port and its first bytes do not parse as a valid TLS ClientHello, SecureSocket::secureAccept enters its fatal-error branch and calls Arch::sleep(1) (a blocking 1-second sleep) on the multiplexer worker thread. That thread services every socket on the server, including established TLS clients delivering mouse motion, keyboard events, and clipboard updates. A single failed handshake therefore stalls input delivery to all connected screens for ~1 second, and a sustained drip of malformed connections (≥ 1/s) makes the server effectively unusable while the attack persists. This vulnerability is fixed in 1.26.0.167.

NVD Source

Technical Analysis

CVE-2026-44296 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.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.