CVE-2020-7060 - CVE House
Back to Database
Status published Medium CVE-2020-7060

global buffer-overflow in mbfl_filt_conv_big5_wchar

Vulnerability Description

When using certain mbstring functions to convert multibyte encodings, in PHP versions 7.2.x below 7.2.27, 7.3.x below 7.3.14 and 7.4.x below 7.4.2 it is possible to supply data that will cause function mbfl_filt_conv_big5_wchar to read past the allocated buffer. This may lead to information disclosure or crash.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2020-7060

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Reported by reza at iseclab dot org

References

More from PHP Group

View All →
CVE-2025-6491
NULL Pointer Dereference in PHP SOAP Extension via Large XML Namespace Prefix
Medium 5.9
CVE-2025-1861
Stream HTTP wrapper truncates redirect location to 1024 bytes
Medium 6.3
CVE-2025-1736
Stream HTTP wrapper header check might omit basic auth header
Medium 6.3
CVE-2025-1735
pgsql extension does not check for errors during escaping
Medium 5.9
CVE-2025-1734
Streams HTTP wrapper does not fail for headers with invalid name and no colon
Medium 6.3

Affected Vendor

Affected Software

PHP
Vulnerable Versions:
7.2.x, 7.3.x, 7.4.x

Timeline

Official Publish: February 10th, 2020
Last Modified: September 17th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

Weaknesses (CWE)

CWE-125

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1213 Data from Information Repositories
Collection
T1003 OS Credential Dumping
Credential Access
T1552 Unsecured Credentials
Credential Access