CVE-2018-0540: Untrusted search path vulnerability in ViX version 2.21.148.0 allows an attacker to gain privileges via a Troj

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HIGH 7.8DOWNGRADE

CVE-2018-0540 is a high-severity flaw (CVSS 7.8) affecting vix. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Untrusted search path vulnerability in ViX version 2.21.148.0 allows an attacker to gain privileges via a Trojan horse DLL in an unspecified directory.

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.9% (top 40%)
CISA exploited list	No
Weakness	CWE-426
Published	2018-03-22
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: vix project

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

Am I affected?

Timeline

2018-03-22 13:29 UTCPublished CVE record published
2026-06-17 01:31 UTCUpdated Record last modified

vix project vix DOWNGRADE

Affected: 2.21.148.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.21.148.0

1. Check installed version

apt-cache policy vix || rpm -q vix || vix --version

2. No fixed release: DOWNGRADE to a release before 2.21.148.0 (Debian / Ubuntu)

apt-cache madison vix sudo apt install vix=<VERSION_BEFORE_2.21.148.0> sudo apt-mark hold vix

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

dnf --showduplicates list vix sudo dnf downgrade vix-<VERSION_BEFORE_2.21.148.0> sudo dnf versionlock add vix

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.

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-2018-0540?

vix: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-0540 being exploited?

CVE-2018-0540 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-2018-0540 affect?

CVE-2018-0540 affects vix. Severity is high (CVSS 7.8). Untrusted search path vulnerability in ViX version 2.21.148.0 allows an attacker to gain privileges via a Trojan horse DLL in an unspecified directory.

How urgent is CVE-2018-0540?

Priority 42/100. High severity

References

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