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:

  • Active exploitation of SAP NetWeaver Visual Composer CVE-2025-31324

    April 28, 2025

    On Thursday, April 24, enterprise resource planning company SAP published a CVE (and a day later, an advisory behind login) for CVE-2025-31324, a zero-day vulnerability in NetWeaver Visual Composer that carries a CVSSv3 score of 10. The vulnerability arises from a missing authorization check in Visual Composer’s Metadata Uploader component that, when successfully exploited, allows unauthenticated ...

  • Commvault Releases Security Updates for Command Center

    April 24, 2025

    Commvault has released a security advisory to address a critical vulnerability in its Command Center Platform. Command Center is Commvault’s all-in-one solution for managing Commvault services within a corporate environment. CVE-2025-34028 is a path traversal vulnerability with a CVSSv3 base score of 10.0, and if exploited could allow an unauthenticated attacker to upload ZIP files. The ...

  • Critical RCE Vulnerability in Erlang/OTP SSH Server

    April 22, 2025

    Erlang has released updates to its OTP package to address a critical vulnerability in its Secure Shell (SSH) server. Erlang is an open-source programming language. OTP (Open Telecom Platform) is a set of Erlang libraries and middle-ware that can be used to develop applications. CVE-2025-32433 is a critical vulnerability with a CVSSv3 score of 10.0. If ...

  • New Rust Botnet “RustoBot” is Routed via Routers

    April 21, 2025

    FortiGuard Labs recently discovered a new botnet propagating through TOTOLINK devices. Unlike previous malware targeting these devices, this variant is written in Rust—a programming language introduced by Mozilla in 2010. Due to its Rust-based implementation, we’ve named the malware “RustoBot.” In January and February of 2025, FortiGuard Labs observed a significant increase in alerts related to ...

  • Cisco Releases Security Advisory for Webex App

    April 17, 2025

    Cisco has released a security advisory to address a high severity vulnerability affecting Webex App, regardless of configuration or operating system. Cisco Webex is a web conferencing software solution. CVE-2025-20236 is an ‘insufficient input validation’ vulnerability with a CVSSv3 score of 8.8. If exploited, a remote, unauthenticated attacker could achieve remote code execution (RCE) by persuading ...

  • Apple says zero-day bugs exploited against ‘specific targeted individuals’ using iOS

    April 16, 2025

    Apple has released new software updates across its product line to fix two security vulnerabilities, which the company said may have been actively used to hack customers running its mobile software, iOS. In security advisories posted on its website, Apple confirmed it fixed the two zero-day vulnerabilities, which “may have been exploited in an extremely sophisticated ...