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🛡️ CVE-2025-1220 on Ubuntu — php5

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Distribution advisory

This page covers CVE-2025-1220 as tracked by Ubuntu, for the package php5. The fix is available in version 7.0.33-0ubuntu0.16.04.16+esm16; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity none, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: Low — limited, and the attacker does not choose what is affected.
  • Integrity impact: None.
  • Availability impact: None.

Affected software

UBUNTU-CVE-2025-1220 is recorded against 7 packages.

  • php5
  • php7.0 (fixed in 7.0.33-0ubuntu0.16.04.16+esm16)
  • php7.2 (fixed in 7.2.24-0ubuntu0.18.04.17+esm9)
  • php7.4 (fixed in 7.4.3-4ubuntu2.29+esm1)
  • php8.1 (fixed in 8.1.2-1ubuntu2.22)
  • php8.3 (fixed in 8.3.6-0ubuntu0.24.04.5)
  • php8.4 (fixed in 8.4.11-1ubuntu1)

Timeline and source

Published on 13 July 2025 and last revised on 22 April 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Report)
www.cve.org (Report)
github.com (Report)
ubuntu.com (Advisory)
ubuntu.com (Advisory)

Other advisories for this package

php5 has other advisories on record. If you are patching this one, these are worth checking on the same host:

CVE-2025-1220 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2025-07-13
Updated 2026-08-20
Modified 2026-04-22
Fix URL N/A

Affected Packages

Software From version Fixed in
php5 — —
php7.0 — 7.0.33-0ubuntu0.16.04.16+esm16
php7.2 — 7.2.24-0ubuntu0.18.04.17+esm9
php7.4 — 7.4.3-4ubuntu2.29+esm1
php8.1 — 8.1.2-1ubuntu2.22
php8.3 — 8.3.6-0ubuntu0.24.04.5
php8.4 — 8.4.11-1ubuntu1

Vulnerability Monitoring

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