CVE-2019-5723: An issue was discovered in portier vision 4.4.4.2 and 4.4.4.6

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2019-5723 is a critical-severity flaw (CVSS 9.8) affecting portier. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in portier vision 4.4.4.2 and 4.4.4.6. Passwords are stored using reversible encryption rather than as a hash value, and the used Vigenere algorithm is badly outdated. Moreover, the encryption key is static and too short. Due to this, the passwords stored by the application can be easily decrypted.

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	1.1% (top 35%)
CISA exploited list	No
Weakness	CWE-327, CWE-522
Published	2019-03-21
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: portier

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

Am I affected?

Timeline

2019-03-21 16:01 UTCPublished CVE record published
2026-06-17 02:38 UTCUpdated Record last modified

portier portier DOWNGRADE

Affected: 4.4.4.2 · 4.4.4.6

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.4.4.2

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 4.4.4.2 (Debian / Ubuntu)

apt-cache madison portier sudo apt install portier=<VERSION_BEFORE_4.4.4.2> sudo apt-mark hold portier

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

dnf --showduplicates list portier sudo dnf downgrade portier-<VERSION_BEFORE_4.4.4.2> sudo dnf versionlock add portier

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-2019-5723?

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

Is CVE-2019-5723 being exploited?

CVE-2019-5723 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-2019-5723 affect?

CVE-2019-5723 affects portier. Severity is critical (CVSS 9.8). An issue was discovered in portier vision 4.4.4.2 and 4.4.4.6. Passwords are stored using reversible encryption rather than as a hash value, and the used Vigenere algorithm is badly outdated. Moreover, the encryption key is static and too s

How urgent is CVE-2019-5723?

Priority 61/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2019-5722 CRITICAL 9.8 DOWNGRADE An issue was discovered in portier vision 4.4.4.2 and 4.4.4.6

References

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