CVE-2018-9031: The login interface on TNLSoftSolutions Sentry Vision 3.x devices provides password disclosure by reading an "

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CRITICAL 9.8REMOTEDOWNGRADE

CVE-2018-9031 is a critical-severity flaw (CVSS 9.8) affecting sentry vision. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

The login interface on TNLSoftSolutions Sentry Vision 3.x devices provides password disclosure by reading an "if(pwd ==" line in the HTML source code. This means, in effect, that authentication occurs only on the client side.

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

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

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.5% (top 25%)
CISA exploited list	No
Weakness	CWE-522
Published	2018-03-29
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: tnlsoftsolutions

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

Am I affected?

Timeline

2018-03-29 16:29 UTCPublished CVE record published
2026-06-17 02:05 UTCUpdated Record last modified

tnlsoftsolutions sentry vision DOWNGRADE

Affected: 3.0 · 3.1 · 3.2

Fixed in: no fixed release known

Safe to downgrade to: a release before 3.0

1. Check installed version

apt-cache policy sentry-vision || rpm -q sentry-vision || sentry-vision --version

2. No fixed release: DOWNGRADE to a release before 3.0 (Debian / Ubuntu)

apt-cache madison sentry-vision sudo apt install sentry-vision=<VERSION_BEFORE_3.0> sudo apt-mark hold sentry-vision

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

dnf --showduplicates list sentry-vision sudo dnf downgrade sentry-vision-<VERSION_BEFORE_3.0> sudo dnf versionlock add sentry-vision

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-2018-9031?

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

Is CVE-2018-9031 being exploited?

CVE-2018-9031 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-2018-9031 affect?

CVE-2018-9031 affects sentry vision. Severity is critical (CVSS 9.8). The login interface on TNLSoftSolutions Sentry Vision 3.x devices provides password disclosure by reading an "if(pwd ==" line in the HTML source code. This means, in effect, that authentication occurs only on the client side.

How urgent is CVE-2018-9031?

Priority 63/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

References

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