CVE-2019-7666

Prima Systems FlexAir devices allow authentication with MD5 hashes directly.

8.8 HighPublic exploit

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

14.6%Up 10.1 points since Apr 14, 2021

What each source reports

NVD Score used 8.8

Record: CVE-2019-7666
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 6.5 MediumAV:N/AC:L/Au:S/C:P/I:P/A:P
Weakness: CWE-287
Updated: 2026-11-02

CVE List No score

Record: CVE-2019-7666
Updated: 2026-11-02

EUVDEUVD-2019-17198 No score

Record: EUVD-2019-17198
Updated: 2026-11-03

GitHub AdvisoriesGHSA-2j6j-xh5r-gf2p 8.8

Prima Systems FlexAir devices allow authentication with MD5 hashes directly.

Prima Systems FlexAir devices allow authentication with MD5 hashes directly.

Record: GHSA-2j6j-xh5r-gf2p
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-287
Updated: 2026-11-02

Affected products

primasystems flexair

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
Source	Link	Date
Exploit-DB	FlexAir Access Control 2.3.35 - Authentication Bypass	2019-11-12

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, Exploit-DB, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-7666 is a high vulnerability (CVSS 8.8) in Primasystems Flexair, published July 1, 2019. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 14.6%, the 96th percentile. No source names a fixed version.