What is the CVSS score of CVE-2023-51126?

CVE-2023-51126 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 25.3%.

Which versions of PHP are affected by CVE-2023-51126?

Organizations using FLIR AX8 face critical risk from CVE-2023-51126, a command injection vulnerability rated CVSS 9.8.

How to fix or mitigate CVE-2023-51126?

Within 7 days: Identify all affected systems running FLIR AX8 and apply vendor patches promptly. Validate that input sanitization is in place for all user-controlled parameters.

PHP CVE-2023-51126

CRITICAL

Command Injection (CWE-77)

2024-01-10 cve@mitre.org

Command Injection PHP Flir Ax8 Firmware

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:34 vuln.today

CVE Published

Jan 10, 2024 - 21:15 nvd

CRITICAL 9.8

DescriptionCVE.org

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.

AnalysisAI

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. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Epss exploitation probability 25.3% and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Command Injection (CWE-77), which allows attackers to inject arbitrary commands into system command execution. 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. Affected products include: Flir Flir Ax8 Firmware. Version information: up to 1.46.16.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use parameterized APIs, avoid shell execution, validate input with strict allowlists.