7-Zip bug could allow a bypass of a Windows security feature – update now


A patch is available for a vulnerability in 7-Zip that could have allowed attackers to bypass the Mark-of-the-Web (MotW) security feature in Windows.

The MotW is an attribute added to files by Windows when they have been sourced from an untrusted location, like the internet or a restricted zone. The MotW is what triggers warnings that opening or running such files could lead to potentially dangerous behavior, including installing malware on their devices. 7-Zip added support for MotW in June 2022. The MotW also makes sure that Office documents that are marked with the MotW will be opened in Protected View, which automatically enables read-only mode and means that all macros will be disabled until the user allows them.

Read more…
Source: Malwarebytes Labs


Sign up for our Newsletter


Related:

  • LANDFALL: New Commercial-Grade Android Spyware in Exploit Chain Targeting Samsung Devices

    November 7, 2025

    Unit 42 researchers have uncovered a previously unknown Android spyware family, which we have named LANDFALL. To deliver the spyware, attackers exploited a zero-day vulnerability (CVE-2025-21042) in Samsung’s Android image processing library. The specific flaw LANDFALL exploited, CVE-2025-21042, is not an isolated case but rather part of a broader pattern of similar issues found on multiple ...

  • Cisco Releases Security Updates for Unified CCX

    November 6, 2025

    Cisco has released security updates to address two critical vulnerabilities in Unified Contact Center Express (Unified CCX). CVE-2025-20354 – Unauthenticated Remote Code Execution (RCE) vulnerability – CVSSv3 score: 9.8 CVE-2025-20358 – Authentication Bypass (unauthenticated to administrative privileges) vulnerability – CVSSv3 score: 9.4 Read more… Source: NHS Digital Sign up for the Cyber Security Review Newsletter The latest cyber security news and ...

  • Washington Post says it is among victims of cyber breach tied to Oracle software

    November 6, 2025

    The Washington Post said it is among victims of a sweeping cyber breach tied to Oracle software. In a statement released on Thursday, the newspaper said it was one of those impacted “by the breach of the Oracle E-Business Suite platform.” The paper did not provide further detail, but its statement comes after CL0P, the notorious ...

  • Apple patches 50 security flaws – update now

    November 5, 2025

    Apple has released security updates for iPhones, iPads, Macs, Apple Watches, Apple TVs, Safari, and Xcode, fixing nearly 50 security flaws. Some of these bugs could let cybercriminals see your private data, take control of parts of your device, or break key security protections. Installing these updates as soon as possible keeps your personal information—and everything ...

  • Operation South Star: 0-day Espionage Campaign Targeting Domestic Mobile Phones

    November 4, 2025

    In recent years, during high-intensity confrontations with Advanced Persistent Threat (APT) groups from the Northeast Asia region, the RedDrip team at QiAnXin Threat Intelligence Center has discovered nearly 20 0day vulnerabilities involving domestic software. Some details have been disclosed in our public reports such as Operation DevilTiger, Operation ShadowTiger, and XSS 0day+Clickonce. In reality, 0day activities ...

  • US government warns Linux CVE-2024-1086 flaw is now being exploited for ransomware attacks

    November 3, 2025

    The US government is warning that a Linux flaw introduced more than a decade ago – and fixed more than a year ago – is being actively used in ransomware attacks. In February 2014, a vulnerability was introduced into the Linux kernel via a commit. The bug was first disclosed in late January 2024, and described ...