CVE-2024-1874Public exploitNetwork attack vector

Command injection via misescaped Windows batch arguments

Published Apr 29, 2024 · Updated Nov 4, 2025

Command injection in proc_open() in The PHP Group PHP 8.1 before 8.1.28, 8.2 before 8.2.18, and 8.3 before 8.3.5 allows attackers to execute commands. On Windows, CreateProcess implicitly invokes cmd.exe for .bat and .cmd targets, but proc_open() escapes array elements with backslashes that cmd.exe does not treat as escapes. Exploitation requires attacker-controlled arguments to reach such a batch target and runs commands with the PHP process's privileges.

CVSS severity9.4
Critical
EPSS probability32.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in proc_open() in The PHP Group PHP 8.1 before 8.1.28, 8.2 before 8.2.18, and 8.3 before 8.3.5 allows attackers to execute commands. On Windows, CreateProcess implicitly invokes cmd.exe for .bat and .cmd targets, but proc_open() escapes array elements with backslashes that cmd.exe does not treat as escapes. Exploitation requires attacker-controlled arguments to reach such a batch target and runs commands with the PHP process's privileges.

The record

CVE
CVE-2024-1874
Published
Apr 29, 2024
Updated
Nov 4, 2025
Vendor
The PHP Group
Product
PHP
Classifications
T1059.003
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.1.0
  2. Affected versionversion=8.1.* <8.1.28
  3. Affected versionversion=8.2.0
  4. Affected versionversion=8.2.* <8.2.18
  5. Affected versionversion=8.3.0
  6. Affected versionversion=8.3.* <8.3.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The PHP Group · PHPversion=8.1.0; version=8.1.* <8.1.28; version=8.2.0; version=8.2.* <8.2.18; version=8.3.0; version=8.3.* <8.3.5

Published CVSS scores

9.4The PHP GroupCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1059.003Command and Scripting Interpreter: Windows Command Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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