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🛡️ CVE-2025-14178 on Ubuntu — php7.2

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

Description

In PHP versions:8.1.* before 8.1.34, 8.2.* before 8.2.30, 8.3.* before 8.3.29, 8.4.* before 8.4.16, 8.5.* before 8.5.1, a heap buffer overflow occurs in array_merge() when the total element count of packed arrays exceeds 32-bit limits or HT_MAX_SIZE, due to an integer overflow in the precomputation of element counts using zend_hash_num_elements(). This may lead to memory corruption or crashes and affect the integrity and availability of the target server.

Distribution advisory

This page covers CVE-2025-14178 as tracked by Ubuntu, for the package php7.2. The fix is available in version 7.2.24-0ubuntu0.18.04.17+esm12; 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 none, integrity low, availability high.

CVSS metrics in full

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

  • 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: None.
  • Integrity impact: Low — limited, and the attacker does not choose what is affected.
  • Availability impact: High — total loss, or loss the attacker controls.

Affected software

UBUNTU-CVE-2025-14178 is recorded against 5 packages.

  • php7.2 (fixed in 7.2.24-0ubuntu0.18.04.17+esm12)
  • php7.4 (fixed in 7.4.3-4ubuntu2.29+esm3)
  • php8.1 (fixed in 8.1.2-1ubuntu2.23)
  • php8.3 (fixed in 8.3.6-0ubuntu0.24.04.6)
  • php8.4 (fixed in 8.4.11-1ubuntu1.1)

Timeline and source

Published on 27 December 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)
github.com (Report)
ubuntu.com (Advisory)

Other advisories for this package

php7.2 has other advisories on record. If you are patching this one, these are worth checking on the same host:

CVE-2025-14178 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:N/I:L/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2025-12-27
Updated 2026-08-20
Modified 2026-04-22
Fix URL N/A

Affected Packages

Software From version Fixed in
php7.2 — 7.2.24-0ubuntu0.18.04.17+esm12
php7.4 — 7.4.3-4ubuntu2.29+esm3
php8.1 — 8.1.2-1ubuntu2.23
php8.3 — 8.3.6-0ubuntu0.24.04.6
php8.4 — 8.4.11-1ubuntu1.1

Site Security Check

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UBUNTU-CVE-2025-14178 is rated CVSS 8.0 High. BotEraser scans your installation against known CVE records and tells you whether this vulnerability applies to the versions you actually run.

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