ThreatsDay Bulletin: Claude Security Plugin, Azure Priv-Esc, Kali365 MFA Bypass, FIFA Scams +15 More

Every time you think the industry has finally stopped doing some reckless, low-effort crap, somebody spins up a fresh box full of sketchy loaders, fake installers, recycled social-engineering bait, and enough exposed infrastructure to make you wonder if prod is just a public beta now - meanwhile...

MuddyWater Uses DLL Side-Loading in Espionage Campaign Targeting 9 Countries

The Iranian hacking group known as MuddyWater has been linked to a new campaign affecting at least nine organizations across nine countries on four continents in the first quarter of 2026. The activity targeted industrial and electronics manufacturing, education and public-sector bodies, financia...

CVE-2026-40599 ClearanceKit: Ad-hoc signed binaries can spoof Apple process identities in the global allowlist

ClearanceKit intercepts file-system access events on macOS and enforces per-process access policies. Prior to 5.0.5, ClearanceKit incorrectly treats a process with an empty Team ID and a non-empty Signing ID as an Apple platform binary. This bug allows a malicious software to impersonate an apple...

CVE-2026-40599

CVE-2026-40599 affects ClearanceKit on macOS. Before 5.0.5, a process with an empty Team ID but non-empty Signing ID can be misidentified as an Apple platform binary, enabling a malicious app to impersonate an Apple process in the global allowlist and access protected files. The issue is fixed in...

Mustang Panda Deploys Updated COOLCLIENT Backdoor in Government Cyber Attacks

Threat actors with ties to China have been observed using an updated version of a backdoor called COOLCLIENT in cyber espionage attacks in 2025 to facilitate comprehensive data theft from infected endpoints. The activity has been attributed to Mustang Panda aka Earth Preta, Fireant, HoneyMyte,...

shim security update

15.8-4.0.1 - Add support for Oracle signed shim Orabug: 36540084 - Add shim binaries signed with Oracle Secure Boot Signing key 1 Orabug: 36540084 15.8-1.0.3 - Update shimx64.efi, shimia32.efi and shimaa64.efi v15.8 signed by Microsoft Orabug: 36072863 15.8-1.0.2 - Use binaries with correct shim....

DEV-0569 finds new ways to deliver Royal ransomware, various payloads

Recent activity from the threat actor that Microsoft tracks as DEV-0569, known to distribute various payloads, has led to the deployment of the Royal ransomware, which first emerged in September 2022 and is being distributed by multiple threat actors. Observed DEV-0569 attacks show a pattern of...

Cisco IOS XE Software Digital Signature Verification Bypass Vulnerability

A vulnerability in the Image Verification feature of Cisco IOS XE Software could allow an authenticated, local attacker to install and boot a malicious software image or execute unsigned binaries on an affected device. The vulnerability exists because, under certain circumstances, an affected...

Applocker Evasion - Microsoft Workflow Compiler

This module will assist you in evading Microsoft Windows Applocker and Software Restriction Policies. This technique utilises the Microsoft signed binaries Microsoft.Workflow.Compiler.exe to execute user supplied code. This module requires Metasploit: https://metasploit.com/download Current sourc...

KB2915720: Changes in Windows Authenticode Signature Verification

The remote Windows host has not enabled the Windows Authenticode signature verification certificate padding check. This means extraneous information can be included in signed binaries. Note that Microsoft announced on July 29, 2014, that it no longer plans to enforce the stricter signature...

Comodo Internet Security Unspecified Vulnerability

Comodo Internet Security is prone to an unspecified vulnerability. SPDX-FileCopyrightText: 2013 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Compatibility Issues Affecting Signed Microsoft Binaries (2749655)

The host is installed with Microsoft Windows operating system and its missing upates according to Microsoft Security Advisory 2749655 OpenVAS Vulnerability Test $Id: gbmsdigitalcretificatetimestampissue.nasl 5346 2017-02-19 08:43:11Z cfi $ Compatibility Issues Affecting Signed Microsoft Binaries...

Compatibility Issues Affecting Signed Microsoft Binaries (2749655)

This host is missing an important security update according to Microsoft 2749655. SPDX-FileCopyrightText: 2012 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...