What’s New Wednesday: Patch Tuesday August 2025 August 13, 2025 – Posted in: Cyber Security, IT Support, What's New Wednesdays – Tags: Cyber Security, it support, ITSupport, Patch Tuesday, patching, WhatsNewWednesday

Welcome to Patch Tuesday August 2025. 107 flaws were patched including one publicly disclosed zero-day vulnerability. It’s a good idea to restart your PC today, and we may well restart some of your servers overnight this week if a patch requires it.

NEW THIS WEDNESDAY

Overall Microsoft patched:

• 44 Elevation of Privilege Vulnerabilities
• 35 Remote Code Execution Vulnerabilities
• 18 Information Disclosure Vulnerabilities
• 4 Denial of Service Vulnerabilities
• 9 Spoofing Vulnerability

There was one publicly disclosed zero-day vulnerabilities patched:
CVE-2025-53779 – Windows Kerberos Elevation of Privilege Vulnerability
A flaw in Windows Kerberos that allows an authenticated attacker to gain domain administrator privileges.

Microsoft also warned about a Microsoft Exchange flaw tracked as CVE-2025-53786 that could be used to hijack cloud environments.

Releases from other software providers include:

• Abobe – updates for AEM Forms zero-days after PoCs were released.
• Cisco – patches for WebEx and Identity Services Engine.
• Fortinet – updates for multiple products, including FortiOS, FortiManager, FortiSandbox, and FortiProxy.
• Google – security updates for Android that fix two actively exploited Qualcomm vulnerabilities.
• Proton – fixed a bug in its new Authenticator app for iOS that logged users’ sensitive TOTP secrets in plaintext.
• SAP – July security updates for multiple products, including numerous vulnerabilities with a 9.9 rating.
• Trend Micro – released a “fix tool” for an actively exploited remote code execution vulnerability in Apex One. Full security updates will come at a later date.
• WinRAR – a security update at the end of July for an actively exploited path traversal bug that could lead to remote code execution.

FULL LIST OF MICROSOFT PATCHES

GLOSSARY

• Authentication – proving who you are so you can be given access to what you need/have rights to.
• MFA – multi-factor authentication, proving who you are in multiple ways, something you know (like a password or pin), something you are (a fingerprint or retina scan), something you have (like your phone – proved with a code).
• Vulnerability – a defect in software that could allow an attacker to gain control of a system or service.
• Patch – a change to a piece of software, released after sale, to fix a problem or add a feature.
• Zero Day – Microsoft classifies a vulnerability as a zero-day if it is publicly disclosed or actively exploited with no official fix available.
• Actively Exploited – an actively exploited vulnerability is one that is being used by malicious actors.
• DDOS / DOS – (Distributed) Denial of Service attack, a method of swamping a service or server with so many false queries at once that it is forced offline.
• Disclosed – a disclosed vulnerability is one that the software creators have published, meaning that it can be easily found out about by anyone who knows where to look.
• CVE ID – CVE, short for Common Vulnerabilities and Exposures, is a list of publicly disclosed computer security flaws, the ID is the number assigned to that vulnerability.
• Severity – a disclosed vulnerability is one that the software creators have published, meaning that it can be easily found out about by anyone who knows where to look.
• Security Feature Bypass Vulnerabilities – allow for intruders to bypass security features such as password protection or MFA.
• Remote Code Execution Vulnerabilities – allow people to remotely trigger potentially malicious code on your device.
• Information Disclosure Vulnerabilities – allow the wrong people access to your data.
• Denial of Service Vulnerabilities – allow a DOS/DDOS attack to succeed.
• Spoofing Vulnerabilities – allow someone to pretend to be you/your systems.

If you have any concerns about cybersecurity, or would like to discuss any other IT Support needs you might have please give us a call on 01245 265100 or email us at . To stay up to date with our regular What’s New Wednesday emails and receive industry news straight to your inbox, subscribe to our newsletters in the top right.