CVE-2025-14177
Severity CVSS v4.0:
MEDIUM
Type:
CWE-125
Out-of-bounds Read
Publication date:
27/12/2025
Last modified:
27/12/2025
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.
Impact
Base Score 4.0
6.30
Severity 4.0
MEDIUM