NVD / CVE Program· CNA php

CVE-2024-11235: Reference counting in php_request_shutdown causes Use-After-Free

Noroxi assessment

Priority: Monitor (action score 36/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 1.4% (FIRST EPSS); higher than 73.7% 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. Special conditions such as timing or configuration are required.
Fixed version: PHP Group PHP 8.3.19, 8.4.5.

Low priority for now. Upgrade to PHP Group PHP 8.3.19, 8.4.5 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 · FIRST EPSS

In PHP versions 8.3.* before 8.3.19 and 8.4.* before 8.4.5, a code sequence involving __set handler or ??= operator and exceptions can lead to a use-after-free vulnerability. If the third party can control the memory layout leading to this, for example by supplying specially crafted inputs to the script, it could lead to remote code execution.

CriticalCVSS 9.2 · v4.0—No exploit Fix available

Published: Apr 4, 2025
Updated: Jun 17, 2026
EPSS: 1.4% · 73th percentile
CWE: CWE-416

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 36 / 40 · 9.2 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 1.4%

CISA SSVC decision

Exploitation: proof of concept
Automatable: no
Technical impact: total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: —
CNA · php: 9.2; NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/U:Amber

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

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

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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.

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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

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

Affected versions

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

php php8.3.0 and later · before 8.3.19
php php8.4.0 and later · before 8.4.5

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
- 8.4.* and later · before 8.4.5affected · semver
- 8.3.* and later · before 8.3.19affected · semver

Package-level exposure

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

Ecosystem	Package	Affected range	Fix
AlmaLinux:10	php	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-bcmath	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-cli	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-common	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-dba	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-dbg	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-devel	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-embedded	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-enchant	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-ffi	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-fpm	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-gd	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-gmp	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-intl	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-ldap	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-mbstring	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-mysqlnd	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-odbc	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-opcache	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-pdo	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-pgsql	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-process	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-snmp	before 8.3.19-1.el10_0	8.3.19-1.el10_0
AlmaLinux:10	php-soap	before 8.3.19-1.el10_0	8.3.19-1.el10_0

+96

Same product

php: all records

Other highest-scoring records for the same primary product.

CVE-2024-4577Argument Injection in PHP-CGIKEV
99Now
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 queKEV
99Now

Published before and after this one in the same product

← EarlierCVE-2025-1736Mar 30, 2025 · Stream HTTP wrapper header check might omit basic auth header
25Monitor
← EarlierCVE-2025-1861Mar 30, 2025 · Stream HTTP wrapper truncates redirect location to 1024 bytes
25Monitor
Later →CVE-2025-6491Jul 13, 2025 · NULL Pointer Dereference in PHP SOAP Extension via Large XML Namespace Prefix
23Monitor

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	8.3.19	Vendor (CNA)
PHP Group PHP	8.4.5	Vendor (CNA)
almalinux:apcu-panel	5.1.23-1.module_el9.6.0+151+5f31e576 · AlmaLinux:9	Package registry (OSV)
almalinux:php	8.3.19-1.module_el9.6.0+166+f262c21c · AlmaLinux:9	Package registry (OSV)
almalinux:php-bcmath	8.3.19-1.module_el9.6.0+166+f262c21c · AlmaLinux:9	Package registry (OSV)
almalinux:php-cli	8.3.19-1.module_el9.6.0+166+f262c21c · AlmaLinux:9	Package registry (OSV)
almalinux:php-common	8.3.19-1.module_el9.6.0+166+f262c21c · AlmaLinux:9	Package registry (OSV)
almalinux:php-dba	8.3.19-1.module_el9.6.0+166+f262c21c · AlmaLinux:9	Package registry (OSV)
almalinux:php-dbg	8.3.19-1.module_el9.6.0+166+f262c21c · AlmaLinux:9	Package registry (OSV)
almalinux:php-devel	8.3.19-1.module_el9.6.0+166+f262c21c · AlmaLinux:9	Package registry (OSV)
almalinux:php-embedded	8.3.19-1.module_el9.6.0+166+f262c21c · AlmaLinux:9	Package registry (OSV)
almalinux:php-enchant	8.3.19-1.module_el9.6.0+166+f262c21c · AlmaLinux:9	Package registry (OSV)
almalinux:php-ffi	8.3.19-1.module_el9.6.0+166+f262c21c · AlmaLinux:9	Package registry (OSV)
almalinux:php-fpm	8.3.19-1.module_el9.6.0+166+f262c21c · AlmaLinux:9	Package registry (OSV)
debian:php8.4	8.4.5-1 · Debian:13	Package registry (OSV)
opensuse:apache2-mod_php7	7.4.33-150400.4.48.1 · openSUSE:Leap 15.6	Package registry (OSV)
opensuse:apache2-mod_php8	8.2.28-150600.3.16.1 · openSUSE:Leap 15.6	Package registry (OSV)
opensuse:php7	7.4.33-150400.4.48.1 · openSUSE:Leap 15.6	Package registry (OSV)
opensuse:php7-embed	7.4.33-150400.4.48.1 · openSUSE:Leap 15.6	Package registry (OSV)
opensuse:php7-fastcgi	7.4.33-150400.4.48.1 · openSUSE:Leap 15.6	Package registry (OSV)
opensuse:php7-fpm	7.4.33-150400.4.48.1 · openSUSE:Leap 15.6	Package registry (OSV)
opensuse:php7-test	7.4.33-150400.4.48.1 · openSUSE:Leap 15.6	Package registry (OSV)
opensuse:php8	8.2.28-150600.3.16.1 · openSUSE:Leap 15.6	Package registry (OSV)
opensuse:php8-embed	8.2.28-150600.3.16.1 · openSUSE:Leap 15.6	Package registry (OSV)
opensuse:php8-fastcgi	8.2.28-150600.3.16.1 · openSUSE:Leap 15.6	Package registry (OSV)
opensuse:php8-fpm	8.2.28-150600.3.16.1 · openSUSE:Leap 15.6	Package registry (OSV)
opensuse:php8-test	8.2.28-150600.3.16.1 · openSUSE:Leap 15.6	Package registry (OSV)
red hat:apcu-panel	0:5.1.23-1.module+el9.6.0+22647+1741ae35 · Red Hat:enterprise_linux:9::appstream	Package registry (OSV)
red hat:php	0:8.3.19-1.module+el9.6.0+23015+da8065b7 · Red Hat:enterprise_linux:9::appstream	Package registry (OSV)
red hat:php-bcmath	0:8.3.19-1.module+el9.6.0+23015+da8065b7 · Red Hat:enterprise_linux:9::appstream	Package registry (OSV)

+30

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

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.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

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

Junwha Hongreporter

Variant candidates

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

CVE-2026-6722401 days apartUse-After-Free in SOAP using Apache map
38Monitor
CVE-2026-7261401 days apartSoapServer session-persisted object use-after-free via SOAP header fault
25Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

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.
Special conditions such as timing or configuration are required.

If successful

Confidentiality
Integrity
Availability

Attack vector: Network
Attack complexity: High
Privileges required: None
User interaction: None
Scope: X

Weakness class (CWE)

CWE-416 · Use After Free

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Amber

nvd-secondary

Root cause

After a memory region is freed, another reference pointing to it is still used. By then, the same region may have been allocated for different data.

The bug in code

The whole CWE-416 class

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

Vulnerable

1free(dev->buf);
2/* ... another thread is still running ... */
3process(dev->buf);

Fixed

1lock(&dev->lock);
2free(dev->buf);
3dev->buf = NULL;
4unlock(&dev->lock);

Attack context

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

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

Fix✗ → ✓Sep 28, 2026, 10:08 PM UTC

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