CVE-2019-7666: Prima Systems FlexAir, Versions 2.3.38 and prior

Q: How do I fix CVE-2019-7666?

flexair: upgrade to newer than 2.3.38. Exact commands for each OS are on this page.

Q: Is CVE-2019-7666 being exploited?

CVE-2019-7666 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2019-7666 affect?

CVE-2019-7666 affects flexair. Severity is high (CVSS 8.8). Prima Systems FlexAir, Versions 2.3.38 and prior. The application allows improper authentication using the MD5 hash value of the password, which may allow an attacker with access to the database to login as admin without decrypting the pass

Q: How urgent is CVE-2019-7666?

Priority 60/100. High severity; EPSS top 3%: very likely to be exploited; Public exploit reference

This week

HIGH 8.8UPGRADE

CVE-2019-7666 is a high-severity flaw (CVSS 8.8) affecting flexair. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Prima Systems FlexAir, Versions 2.3.38 and prior. The application allows improper authentication using the MD5 hash value of the password, which may allow an attacker with access to the database to login as admin without decrypting the password.

Why this priority

High severity
EPSS top 3%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	14.6% (top 3%)
CISA exploited list	No
Weakness	CWE-287
Published	2019-07-01
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: primasystems

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

Am I affected?

Timeline

2019-07-01 19:15 UTCPublished CVE record published
2026-06-17 02:40 UTCUpdated Record last modified

primasystems flexair UPGRADE

Affected: <= 2.3.38

Fixed in: newer than 2.3.38

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2.3.38 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade flexair

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade flexair

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: FlexAir Access Control 2.3.35 - Authentication Bypass

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-2019-7666?

flexair: upgrade to newer than 2.3.38. Exact commands for each OS are on this page.

Is CVE-2019-7666 being exploited?

CVE-2019-7666 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-2019-7666 affect?

CVE-2019-7666 affects flexair. Severity is high (CVSS 8.8). Prima Systems FlexAir, Versions 2.3.38 and prior. The application allows improper authentication using the MD5 hash value of the password, which may allow an attacker with access to the database to login as admin without decrypting the pass

How urgent is CVE-2019-7666?

Priority 60/100. High severity; EPSS top 3%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2019-9189 HIGH 8.8 UPGRADE Prima Systems FlexAir, Versions 2.4.9api3 and prior
CVE-2019-7672 HIGH 8.8 UPGRADE Prima Systems FlexAir, Versions 2.3.38 and prior
CVE-2019-7671 CRITICAL 9.0 UPGRADE Prima Systems FlexAir, Versions 2.3.38 and prior
CVE-2019-7670 HIGH 7.2 UPGRADE Prima Systems FlexAir, Versions 2.3.38 and prior
CVE-2019-7669 HIGH 8.8 UPGRADE Prima Systems FlexAir, Versions 2.3.38 and prior

References

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