NVD / CVE Program· CNA php

CVE-2024-4577: Argument Injection in PHP-CGI

CriticalCVSS 9.8 · v3.1KEVWeaponized Fix available

Noroxi assessment

Priority: Now (action score 99/100)

CISA has confirmed exploitation in the wild (Jun 12, 2024); it is known to be used in ransomware campaigns. Remediation deadline for US federal agencies: Jul 3, 2024.
A ready-made attack module is public (Metasploit, Nuclei); exploiting it takes no special expertise.
Probability of exploitation in the next 30 days: 99.9% (FIRST EPSS); higher than 99.9% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to CISA the attack is automatable: targets can be found by mass scanning.
Fixed version: PHP Group PHP 8.1.29, 8.2.20, 8.3.8.

Patch today or shut off access. Upgrade to PHP Group PHP 8.1.29, 8.2.20, 8.3.8 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · CISA KEV · FIRST EPSS

In PHP versions 8.1.* before 8.1.29, 8.2.* before 8.2.20, 8.3.* before 8.3.8, when using Apache and PHP-CGI on Windows, if the system is set up to use certain code pages, Windows may use "Best-Fit" behavior to replace characters in command line given to Win32 API functions. PHP CGI module may misinterpret those characters as PHP options, which may allow a malicious user to pass options to PHP binary being run, and thus reveal the source code of scripts, run arbitrary PHP code on the server, etc.

Published: Jun 9, 2024
Updated: Jun 17, 2026
EPSS: 99.9% · 99th percentile
CWE: CWE-78

Report tools

JSON

Action score

Now

Patch today or shut off access.

CVSS: 39 / 40 · 9.8 / 10
CISA KEV: 30 / 30 · Listed
EPSS: 30 / 30 · 99.9%

CISA SSVC decision

Exploitation: active
Automatable: yes
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: 9.8
CNA · php: 9.8; agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Jun 12, 2024. That signals real attacks, not theory.

Remediation deadline for US federal agencies: Jul 3, 2024.

Known to be used in ransomware campaigns.

Get told when this record changes

In CISA KEV: exploitation in the wild confirmed
Weaponized exploit exists
A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
php	php	cpe:2.3:a:php:php
microsoft	windows	cpe:2.3:o:microsoft:windows
fedoraproject	fedora	cpe:2.3:o:fedoraproject:fedora

Using php? Add it to your stack and be the first to know about CVEs like this one. (PHP)

Versions reported by the vendor

Affected version ranges reported by the assigning authority (php). Independent of NVD's CPE analysis and usually ahead of it.

PHP Group PHP
- 8.1.* and later · before 8.1.29affected · semver
- 8.2.* and later · before 8.2.20affected · semver
- 8.3.* and later · before 8.3.8affected · semver

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

php php8.1.0 and later · before 8.1.29
php php8.2.0 and later · before 8.2.20
php php8.3.0 and later · before 8.3.8

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Alpine:v3.19	php81	before 8.1.29-r0	8.1.29-r0
Alpine:v3.19	php82	before 8.2.20-r0	8.2.20-r0
Alpine:v3.19	php83	before 8.3.8-r0	8.3.8-r0
openSUSE:Tumbleweed	php8	before 8.3.12-1.1	8.3.12-1.1

Same product

php: all records

Other highest-scoring records for the same primary product.

CVE-2019-11043Underflow in PHP-FPM can lead to RCEKEV
99Now
CVE-2012-1823sapi/cgi/cgi_main.c in PHP before 5.3.12 and 5.4.x before 5.4.2, when configured as a CGI script (aka php-cgi), does not properly handle…KEV
99Now
CVE-2026-109619RCE via stale global stateKEV
96Now

Published before and after this one in the same product

← EarlierCVE-2024-5585Jun 9, 2024 · Command injection via array-ish $command parameter of proc_open() (bypass CVE-2024-1874 fix)
44Plan
← EarlierCVE-2024-2408Jun 9, 2024 · PHP is vulnerable to the Marvin Attack
23Monitor
Later →CVE-2024-8925Oct 8, 2024 · Erroneous parsing of multipart form data
21Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
PHP Group PHP	8.1.29	Vendor (CNA)
PHP Group PHP	8.2.20	Vendor (CNA)
PHP Group PHP	8.3.8	Vendor (CNA)
alpine:php81	8.1.29-r0 · Alpine:v3.19	Package registry (OSV)
alpine:php82	8.2.20-r0 · Alpine:v3.19	Package registry (OSV)
alpine:php83	8.3.8-r0 · Alpine:v3.19	Package registry (OSV)
opensuse:php8	8.3.12-1.1 · openSUSE:Tumbleweed	Package registry (OSV)

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

Metasploit module ×1
Exploit-DB entry ×1
Nuclei detection template ×1
Proof-of-concept repository on GitHub ×50

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
Source	Kind	Date
Proof-of-concept repository on GitHub	50 repositories	2024-06-07 → 2025-03-15
Exploit-DB entry	webapps	2025-06-15
Metasploit module	exploit/windows/http/php_cgi_arg_injection_rce_cve_2024_4577PHP CGI Argument Injection Remote Code Executionexploit	2024-06-06
Nuclei detection template	Nuclei template CVE-2024-4577	—

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

MetasploitJun 6, 2024-4 d
First PoCJun 7, 2024-3 d
PublishedJun 9, 2024
CISA KEVJun 12, 2024+2 d
TodayNov 14, 2026+887 d

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Orange Tsai, DEVCORE Research Teamreporter

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2024-55850 days apartCommand injection via array-ish $command parameter of proc_open() (bypass CVE-2024-1874 fix)
44Plan
CVE-2024-8926121 days apartPHP CGI Parameter Injection Vulnerability (CVE-2024-4577 bypass)
36Monitor

Not on record for this CVE: EPSS history · patch commit or PR link · public bounty program.

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: high · data can be read
Integrity: high · data or configuration can be modified
Availability: high · the service can be disrupted

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

Weakness class (CWE)

CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSS vector

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

nvd-primary

Root cause

User input is inserted as text into a shell command. The shell may interpret special characters in the input as part of the command.

The bug in code

The whole CWE-78 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1const host = req.body.host;
2exec("ping -c 1 " + host, onResult);

Fixed

1const host = req.body.host;
2if (!/^[a-z0-9.-]{1,253}$/i.test(host)) return res.sendStatus(400);
3execFile("ping", ["-c", "1", host], onResult);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

—

Change log (1)

Fix✗ → ✓Sep 28, 2026, 10:09 PM UTC

For records you follow, these changes also arrive as notifications. →

References

cert.be/en/advisory/warning-php-remote-code-execution-patch-immediately

Show all references (10 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records

Noroxi analysis

What does it mean in your environment?

We use this product, ask for help

Data sources and verification

CNA: php

CVE.org (CNA)Oct 21, 2025, 11:05 PM UTC
CISA ADPOct 21, 2025, 11:05 PM UTC
NVDJun 17, 2026, 4:02 AM UTC
FIRST EPSSOct 3, 2026, 12:00 AM UTC
OSV / GHSANov 13, 2026, 3:18 AM UTC
Exploit-DBNov 13, 2026, 3:17 AM UTC
MetasploitNov 13, 2026, 3:18 AM UTC
NucleiNov 13, 2026, 3:18 AM UTC
PoC-in-GitHubNov 13, 2026, 3:18 AM UTC

Each line is when that source was last processed for this record.

CVE-2024-4577: Argument Injection in PHP-CGI

Noroxi assessment

Get told when this record changes

Follow CVE-2024-4577

What does it mean in your environment?

Affected systems

Is your version affected?

Watch new CVEs for php

Versions reported by the vendor

Affected versions

Package-level exposure

Same product

Remediation

Which version to upgrade to

Exploit status

Research context

Timeline

Credits

Variant candidates

Technical details

Attack conditions

If successful

Root cause

The bug in code

Attack context

References