Is CVE-2026-39906 actively exploited?

No active exploitation of CVE-2026-39906 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-39906 be exploited remotely?

Yes. CVE-2026-39906 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-39906?

CVE-2026-39906 has a CVSS score of 7.0 (HIGH).

HOME VULNERABILITIESCVE-2026-39906

HIGH

CVE-2026-39906

CWE-441Published: April 14, 2026· Updated: Apr 17, 2026

7.0

CVSS v3.1

EPSS:0.18%probability of exploitation in 30 daysPercentile:38.9th

Official Description

Unisys WebPerfect Image Suite versions 3.0.3960.22810 and 3.0.3960.22604 expose a deprecated .NET Remoting TCP channel that allows remote unauthenticated attackers to leak NTLMv2 machine-account hashes by supplying a Windows UNC path as a target file argument through object-unmarshalling techniques. Attackers can capture the leaked NTLMv2 hash and relay it to other hosts to achieve privilege escalation or lateral movement depending on network configuration and patch level.

NVD Source

Technical Analysis

CVE-2026-39906 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.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionNone

ScopeX

Impact

Confidentiality

Integrity

Availability

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X