CVE-2025-26155: NCP Secure Enterprise Client 13.18 and NCP Secure Entry Windows Client 13.19 have an Untrusted Search Path vul

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CRITICAL 9.8REMOTEDOWNGRADEDOWNGRADE

CVE-2025-26155 is a critical-severity flaw (CVSS 9.8) affecting ncp secure entry client, secure enterprise client. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

NCP Secure Enterprise Client 13.18 and NCP Secure Entry Windows Client 13.19 have an Untrusted Search Path vulnerability.

Why this priority

Critical severity
Public exploit reference
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-426
Published	2025-11-26
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: ncp-e

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-11-26 19:15 UTCPublished CVE record published
2026-06-17 09:01 UTCUpdated Record last modified

ncp-e ncp secure entry client DOWNGRADE

Affected: 13.19

Fixed in: no fixed release known

Safe to downgrade to: a release before 13.19

1. Check installed version

apt-cache policy ncp-secure-entry-client || rpm -q ncp-secure-entry-client || ncp-secure-entry-client --version

2. No fixed release: DOWNGRADE to a release before 13.19 (Debian / Ubuntu)

apt-cache madison ncp-secure-entry-client sudo apt install ncp-secure-entry-client=<VERSION_BEFORE_13.19> sudo apt-mark hold ncp-secure-entry-client

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list ncp-secure-entry-client sudo dnf downgrade ncp-secure-entry-client-<VERSION_BEFORE_13.19> sudo dnf versionlock add ncp-secure-entry-client

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

ncp-e secure enterprise client DOWNGRADE

Affected: 13.18

Fixed in: no fixed release known

Safe to downgrade to: a release before 13.18

1. Check installed version

apt-cache policy secure-enterprise-client || rpm -q secure-enterprise-client || secure-enterprise-client --version

2. No fixed release: DOWNGRADE to a release before 13.18 (Debian / Ubuntu)

apt-cache madison secure-enterprise-client sudo apt install secure-enterprise-client=<VERSION_BEFORE_13.18> sudo apt-mark hold secure-enterprise-client

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list secure-enterprise-client sudo dnf downgrade secure-enterprise-client-<VERSION_BEFORE_13.18> sudo dnf versionlock add secure-enterprise-client

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora ELN · openjpeg · FIXED · 2.5.4-5.eln159 · FEDORA-2026-1a5f60f401 · source

sudo dnf upgrade --advisory=FEDORA-2026-1a5f60f401

Fedora 46 · trustedqsl · FIXED · 2.8.7-1.fc46 · FEDORA-2026-6b1bc90ebc · source

sudo dnf upgrade --advisory=FEDORA-2026-6b1bc90ebc

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-26155?

ncp secure entry client: downgrade or apply the listed mitigation; secure enterprise client: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-26155 being exploited?

CVE-2025-26155 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-26155 affect?

CVE-2025-26155 affects ncp secure entry client, secure enterprise client. Severity is critical (CVSS 9.8). NCP Secure Enterprise Client 13.18 and NCP Secure Entry Windows Client 13.19 have an Untrusted Search Path vulnerability.

How urgent is CVE-2025-26155?

Priority 60/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

Software pages

Windows vulnerabilities

References

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