CVE-2023-51126: Command injection vulnerability in /usr/www/res.php in FLIR AX8 up to 1.46.16 allows attackers to run arbitrar

Q: How do I fix CVE-2023-51126?

flir ax8 firmware: upgrade to newer than 1.46.16. Exact commands for each OS are on this page.

Q: Is CVE-2023-51126 being exploited?

CVE-2023-51126 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-2023-51126 affect?

CVE-2023-51126 affects flir ax8 firmware. Severity is critical (CVSS 9.8). Command injection vulnerability in /usr/www/res.php in FLIR AX8 up to 1.46.16 allows attackers to run arbitrary commands via the value parameter. NOTE: The vendor has stated that with the introduction of firmware version 1.49.16 (Jan 2023)

Q: How urgent is CVE-2023-51126?

Priority 64/100. Critical severity; EPSS top 2%: very likely to be exploited; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2023-51126 is a critical-severity flaw (CVSS 9.8) affecting flir ax8 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Command injection vulnerability in /usr/www/res.php in FLIR AX8 up to 1.46.16 allows attackers to run arbitrary commands via the value parameter. NOTE: The vendor has stated that with the introduction of firmware version 1.49.16 (Jan 2023) the FLIR AX8 should no longer be affected by the vulnerability reported. Latest firmware version (as of Oct 2025, was released Jun 2024) is 1.55.16.

Why this priority

Critical severity
EPSS top 2%: very likely to be exploited
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	31.1% (top 2%)
CISA exploited list	No
Weakness	CWE-77
Published	2024-01-10
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: flir

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

Am I affected?

Timeline

2024-01-10 21:15 UTCPublished CVE record published
2026-06-17 06:40 UTCUpdated Record last modified

flir flir ax8 firmware UPGRADE

Affected: <= 1.46.16

Fixed in: newer than 1.46.16

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2023-51126?

flir ax8 firmware: upgrade to newer than 1.46.16. Exact commands for each OS are on this page.

Is CVE-2023-51126 being exploited?

CVE-2023-51126 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-2023-51126 affect?

CVE-2023-51126 affects flir ax8 firmware. Severity is critical (CVSS 9.8). Command injection vulnerability in /usr/www/res.php in FLIR AX8 up to 1.46.16 allows attackers to run arbitrary commands via the value parameter. NOTE: The vendor has stated that with the introduction of firmware version 1.49.16 (Jan 2023)

How urgent is CVE-2023-51126?

Priority 64/100. Critical severity; EPSS top 2%: very likely to be exploited; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities

Related CVEs

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CVE-2025-5127 LOW 3.5 UPGRADE A vulnerability was determined in Teledyne FLIR AX8 up to 1.46.16
CVE-2025-5126 HIGH 8.8 UPGRADE A vulnerability was found in Teledyne FLIR AX8 up to 1.46.16
CVE-2024-3013 MEDIUM 6.3 UPGRADE A flaw has been found in Teledyne FLIR AX8 up to 1.46.16
CVE-2023-51127 HIGH 7.5 MITIGATE FLIR AX8 thermal sensor cameras up to and including 1.46.16 are vulnerable to Directory Traversal due to impro

References

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