PT-2026-53084

CVE-2026-58052

Published

2026-06-23

Updated

2026-09-24

Description by

CVSS 4.0

4.8

Medium

MetricsAV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Name of the Vulnerable Software and Affected Versions 7-Zip for Windows versions prior to 26.02

Description 7-Zip fails to preserve the Mark-of-the-Web (MotW) when extracting a specially crafted RAR5 archive. The software uses a guard to suppress archive-supplied Zone.Identifier streams, but it only matches the exact name Zone.Identifier. An attacker can use a RAR5 STM (Stream Extension) record named :Zone.Identifier:$DATA, which NTFS canonicalizes to the same stream, effectively overwriting the Internet-zone marker with ZoneId=0. Additionally, a second STM record named ::$DATA can overwrite the extracted file's default data stream. This allows an attacker to bypass SmartScreen and MotW warnings and spoof file content.

Recommendations Update 7-Zip for Windows to a version newer than 26.02.

Exploitability

Exploit

Fix

Impacts

Researchers

Vendors

Affected products

Weakness enumeration

CWE-693: Protection Mechanism Failure

Related identifiers

CVE-2026-58052