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CVE-2025-14177— Information Leak of Memory in getimagesize

Quick assessment

Affected
PHP Group PHP
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

PHP是PHP开源的一种在服务器端执行的脚本语言。 PHP 8.1.34之前版本、8.2.30之前版本、8.3.29之前版本、8.4.16之前版本和8.5.1之前版本存在安全漏洞，该漏洞源于getimagesize函数在多块模式下可能泄露未初始化的堆内存，可能导致信息泄露。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.51% · P41

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System
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I. Basic Information for CVE-2025-14177

Vulnerability Information
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Vulnerability Title
Information Leak of Memory in getimagesize
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
PHP 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PHP是PHP开源的一种在服务器端执行的脚本语言。 PHP 8.1.34之前版本、8.2.30之前版本、8.3.29之前版本、8.4.16之前版本和8.5.1之前版本存在安全漏洞，该漏洞源于getimagesize函数在多块模式下可能泄露未初始化的堆内存，可能导致信息泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
PHP Group PHP 8.1.* ~ 8.1.34 -

II. Public POCs for CVE-2025-14177

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III. Intelligence Information for CVE-2025-14177

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Vendor Advisories for CVE-2025-14177 (1)

Same Patch Batch · PHP Group · 2025-12-27 · 3 CVEs total

CVE-2025-14178 6.5 MEDIUM Heap buffer overflow in array_merge()
CVE-2025-14180 NULL Pointer Dereference in PDO quoting

IV. Related Vulnerabilities

Same product: PHP
Same vendor: PHP Group
Same weakness: CWE-125

V. Comments for CVE-2025-14177

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