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, the getimagesize() function may leak uninitialized heap memory into the APPn segments (e.g., APP1) when reading images in multi-chunk mode (such as via php://filter). This occurs due to a bug in php_read_stream_all_chunks() that overwrites the buffer without advancing the pointer, leaving tail bytes uninitialized. This may lead to information disclosure of sensitive heap data and affect the confidentiality of the target server.
Published: 2025-12-27
Score: 6.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-6088-1 php8.4 security update
Debian DSA Debian DSA DSA-6154-1 php8.2 security update
Ubuntu USN Ubuntu USN USN-7953-1 PHP vulnerabilities
History

Thu, 08 Jan 2026 22:15:00 +0000

Type Values Removed Values Added
First Time appeared Php
Php php
CPEs cpe:2.3:a:php:php:*:*:*:*:*:*:*:*
cpe:2.3:a:php:php:8.5.0:*:*:*:*:*:*:*
Vendors & Products Php
Php php
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N'}

 cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

Tue, 30 Dec 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N'}

threat_severity

Low

Mon, 29 Dec 2025 23:15:00 +0000

Type Values Removed Values Added
First Time appeared Php Group
Php Group php
Vendors & Products Php Group
Php Group php

Mon, 29 Dec 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Sat, 27 Dec 2025 19:45:00 +0000

Type Values Removed Values Added
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, the getimagesize() function may leak uninitialized heap memory into the APPn segments (e.g., APP1) when reading images in multi-chunk mode (such as via php://filter). This occurs due to a bug in php_read_stream_all_chunks() that overwrites the buffer without advancing the pointer, leaving tail bytes uninitialized. This may lead to information disclosure of sensitive heap data and affect the confidentiality of the target server.
Title Information Leak of Memory in getimagesize
Weaknesses CWE-125
References
Metrics cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N'}

Subscriptions

Php Php
Php Group Php
cve-icon MITRE

Status: PUBLISHED

Assigner: php

Published:

Updated: 2025-12-29T16:01:36.231Z

Reserved: 2025-12-06T06:23:06.907Z

Link: CVE-2025-14177

cve-icon Vulnrichment

Updated: 2025-12-29T16:01:31.634Z

cve-icon NVD

Status : Analyzed

Published: 2025-12-27T20:15:40.400

Modified: 2026-01-08T22:03:28.630

Link: CVE-2025-14177

cve-icon Redhat

Severity : Low

Publid Date: 2025-12-27T19:33:23Z

Links: CVE-2025-14177 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-12-29T22:33:27Z

Weaknesses