CVE-2019-7671: Prima Systems FlexAir, Versions 2.3.38 and prior

Q: How do I fix CVE-2019-7671?

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

Q: Is CVE-2019-7671 being exploited?

CVE-2019-7671 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-2019-7671 affect?

CVE-2019-7671 affects flexair. Severity is critical (CVSS 9.0). Prima Systems FlexAir, Versions 2.3.38 and prior. Parameters sent to scripts are not properly sanitized before being returned to the user, which may allow an attacker to execute arbitrary code in a user’s browser session in context of an af

Q: How urgent is CVE-2019-7671?

Priority 60/100. Critical severity; EPSS top 5%: very likely to be exploited; Public exploit reference

This week

CRITICAL 9.0UPGRADE

CVE-2019-7671 is a critical-severity flaw (CVSS 9.0) 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. Parameters sent to scripts are not properly sanitized before being returned to the user, which may allow an attacker to execute arbitrary code in a user’s browser session in context of an affected site.

Why this priority

Critical severity
EPSS top 5%: very likely to be exploited
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	9.0 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	Required
EPSS exploit chance	8.1% (top 5%)
CISA exploited list	No
Weakness	CWE-79
Published	2019-06-05
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

2019-06-05 19:29 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: Prima Access Control 2.3.35 - 'HwName' Persistent Cross-Site Scripting

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-2019-7671?

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

Is CVE-2019-7671 being exploited?

CVE-2019-7671 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-2019-7671 affect?

CVE-2019-7671 affects flexair. Severity is critical (CVSS 9.0). Prima Systems FlexAir, Versions 2.3.38 and prior. Parameters sent to scripts are not properly sanitized before being returned to the user, which may allow an attacker to execute arbitrary code in a user’s browser session in context of an af

How urgent is CVE-2019-7671?

Priority 60/100. Critical severity; EPSS top 5%: 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-2019-7670 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
CVE-2019-7668 CRITICAL 9.8 UPGRADE Prima Systems FlexAir devices have Default Credentials.

References

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