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CVE-2025-1220

Null byte termination in hostnames

Published: Jul 13, 2025Updated: Nov 4, 2025 Sources: CVE List NVD BDUCWE-918
NVD MITRE
3.7CVSSLOW
EPSS Score
0.5%
Top 60.4%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

Description

In PHP versions:8.1.* before 8.1.33, 8.2.* before 8.2.29, 8.3.* before 8.3.23, 8.4.* before 8.4.10 some functions like fsockopen() lack validation that the hostname supplied does not contain null characters. This may lead to other functions like parse_url() treat the hostname in different way, thus opening way to security problems if the user code implements access checks before access using such functions.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-918

Affected Products

phpphp
Dev Tool
OSS Libraries / generic-library
PHPPHP Group
LibraryLibrary
OSS Libraries
UbuntuCanonical Ltd.
On-premOS
Operating Systems / linux-distro
openSUSE TumbleweedNovell Inc.
On-premOS
Operating Systems / linux-distro
Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
phposs-projectUSOSS Librariesaka php language, pecl, pear
php grouposs-projectOSS Librariesaka php, pear
canonical ltd.commercialGBOperating Systemsaka canonical
novell inc.commercialUSOperating Systems
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
and 11 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

2 techniques
Command and Control
Initial Access
View detailed technique mapping

References

https://github.com/php/php-src/security/advisories/GHSA-3cr5-j632-f35r
github.com
http://www.openwall.com/lists/oss-security/2025/07/11/4
openwall.com
https://lists.debian.org/debian-lts-announce/2025/07/msg00017.html
lists.debian.org
and 14 more references View all →

Timeline

Published
Jul 13, 2025
Last Updated
Nov 4, 2025

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