Tag Archives: Rapid7

August Microsoft Patch Tuesday

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August Microsoft Patch Tuesday

August Microsoft Patch Tuesday. A total of 401 vulnerabilities were addressed - 170 fewer than in July. One of the vulnerabilities is known to be actively exploited in the wild:

🔻 EoP - Windows Ancillary Function Driver for WinSock (CVE-2026-68820). A local attacker can exploit this vulnerability to gain SYSTEM-level privileges. There is a contradiction in Microsoft's description: the Exploit Code Maturity in CVSS is marked as "Unproven", while at the same time Microsoft states that the vulnerability is being exploited in the wild. 🤷‍♂️

Public exploits are available for two other vulnerabilities:

🔸 EoP - Windows User Profile Service (CVE-2026-62832). This vulnerability allows an authenticated attacker to elevate privileges to ADMINISTRATOR level. Rapid7 believes this vulnerability is related to the LegacyHive exploit, which was published on July 14.

🔸 EoP - Windows Kernel (CVE-2026-62737). This vulnerability allows an authenticated attacker to elevate privileges to SYSTEM level. An exploit has been publicly available since August 11.

Among the remaining vulnerabilities, the following stand out:

🔹 RCE - Windows DNS Server (CVE-2026-62878). This wormable vulnerability allows a remote unauthenticated attacker to execute code on a vulnerable server with elevated privileges. It is recommended to test and install the update as soon as possible, especially on Internet-facing DNS servers.

🔹 RCE - Windows Deployment Services TFTP Server (CVE-2026-62893). This vulnerability, discovered as part of the ZDI (Zero Day Initiative) program, allows an attacker to execute code without authentication or user interaction. TFTP has no authentication mechanism and is available remotely via UDP port 69. Any WDS server serving Windows Imaging Format (WIM) files via TFTP, which is the standard PXE boot scenario, is vulnerable. The issue results from the lack of validation of the existence of an object before performing operations on it. UDP port 69 should be blocked at the perimeter, but attackers could easily use this vulnerability for lateral movement within an organization. If you're using WDS for deployments, test and install this update quickly.

🔹 RCE - Windows DHCP Server (CVE-2026-62823). Successful exploitation of this vulnerability allows a remote unauthenticated attacker to execute arbitrary code from an adjacent network by sending a specially crafted packet that triggers a heap-based buffer overflow.

🔹 EoP - Microsoft Exchange (CVE-2026-62911). This vulnerability allows a remote authenticated attacker (with Privileges Required: Low according to CVSS) to gain control over the mailboxes of all Exchange users, send and read emails, and download attachments. This vulnerability was demonstrated at Pwn2Own Berlin. ZDI researchers provided Microsoft with working exploits.

🔹 RCE - Microsoft QUIC (CVE-2026-62815). This use-after-free vulnerability allows an unauthenticated attacker to execute arbitrary code on a target system by sending a specially crafted network packet. QUIC is an IETF-standardized transport protocol that runs over UDP instead of TCP and serves as the foundation for HTTP/3. The protocol is used by approximately 13.5 million websites.

🔹 Tampering - Windows Container Isolation FS Filter Driver (unionfs.sys) (CVE-2026-72971). This vulnerability reportedly allows an attacker to overwrite certain files. As a result, an attacker could perform an action within a container that could impact the host system.

🗒 Full Vulristics report

Microsoft Patch Tuesday July 2023: Vulristics improvements, Office RCE, SFB SmartScreen and Outlook, EoP MSHTML and ERS, other RCEs

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Microsoft Patch Tuesday July 2023: Vulristics improvements, Office RCE, SFB SmartScreen and Outlook, EoP MSHTML and ERS, other RCEs. Hello everyone! This episode will be about Microsoft Patch Tuesday for July 2023, including vulnerabilities that were added between June and July Patch Tuesdays.

Alternative video link (for Russia): https://vk.com/video-149273431_456239131

As usual, I use my open source Vulristics project to analyse and prioritize vulnerabilities.

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Microsoft Patch Tuesday August 2022: DogWalk, Exchange EOPs, 13 potentially dangerous, 2 funny, 3 mysterious vulnerabilities

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Microsoft Patch Tuesday August 2022: DogWalk, Exchange EOPs, 13 potentially dangerous, 2 funny, 3 mysterious vulnerabilities. Hello everyone! In this episode, let’s take a look at the Microsoft Patch Tuesday August 2022 vulnerabilities. I use my Vulristics vulnerability prioritization tool as usual. I take comments for vulnerabilities from Tenable, Qualys, Rapid7, ZDI and Kaspersky blog posts. Also, as usual, I take into account the vulnerabilities added between the July and August Patch Tuesdays.

Alternative video link (for Russia): https://vk.com/video-149273431_456239098

There were 147 vulnerabilities. Urgent: 1, Critical: 0, High: 36, Medium: 108, Low: 2.

There was a lot of great stuff this Patch Tuesday. There was a critical exploited in the wild MSDT DogWalk vulnerability, 3 critical Exchange vulnerabilities that could be easily missed in prioritization, 13 potentially dangerous vulnerabilities, 2 funny vulnerabilities and 3 mysterious ones. Let’s take a closer look.

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Vulnerability Management news and publications #2

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Vulnerability Management news and publications #2. Hello everyone! This is the second episode of Vulnerability Management news and publications. In fact, this is a collection of my posts from the avleonovcom and avleonovrus telegram channels. Therefore, if you want to read them earlier, subscribe to these channels.

The main idea of ​​this episode. Microsoft is a biased company. In fact, they should now be perceived as another US agency. Does this mean that we need to forget about Microsoft and stop tracking what they do? No, it doesn’t. They do a lot of interesting things that can at least be researched and copied. Does this mean that we need to stop using Microsoft products? In some locations (you know which ones) for sure, in some we can continue to use such products if it is reasonable, but it’s necessary to have a plan B. And this does not only apply to Microsoft. So, it’s time for a flexible approaches. Here we do it this way, there we do it differently. It seems that rather severe fragmentation of the IT market is a long-term trend and it’s necessary to adapt to it.

Alternative video link (for Russia): https://vk.com/video-149273431_456239097

What’s in this episode:

  1. Microsoft released a propaganda report, what does this mean for us?
  2. Microsoft released the Autopatch feature, is it a good idea to use it?
  3. Ridiculous Vulnerability: Hardcoded Password in Confluence Questions
  4. The new Nessus Expert and why it’s probably Tenable’s worst release
  5. Rapid7 Nexpose/InsightVM features added in Q2 2022: what’s good and what’s weird
  6. Palo Alto: Malicious scan 15 minutes after CVE is released. Oh really?
  7. 6 groups of vulnerabilities that are most often used in attacks, according to Palo Alto, and the end of IT globalization

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Microsoft Patch Tuesday April 2022 and custom CVE comments sources in Vulristics

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Microsoft Patch Tuesday April 2022 and custom CVE comments sources in Vulristics. Hello everyone! This episode will be about Microsoft Patch Tuesday for April 2022 and new improvements in my Vulristics project. I decided to add more comment sources. Because it’s not just Tenable, Qualys, Rapid7 and ZDI make Microsoft Patch Tuesday reviews, but also other security companies and bloggers.

Alternative video link (for Russia): https://vk.com/video-149273431_456239085

You can see them in my automated security news telegram channel avleonovnews after every second Tuesday of the month. So, now you can add any links with CVE comments to Vulristics.

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Microsoft Patch Tuesday February 2022

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Microsoft Patch Tuesday February 2022. Hello everyone! This episode will be about Microsoft Patch Tuesday for February 2022. I release it pretty late, because of the my previous big episode about the blindspots in the Knowledge Bases of Vulnerability Scanners. Please take a look if you haven’t seen it. Well, if you are even slightly interested in the world news, you can imagine that the end of February 2022 in Eastern Europe is not the best time to create new content on Vulnerability Management. Let’s hope that peace and tranquility will be restored soon. And also that geopolitical confrontation between the largest nuclear powers will de-escalate somehow.

But let’s get back to information security. While working on Microsoft Patch Tuesday report for February 2022, I made a lot of improvements to my open source project for vulnerability prioritization Vulristics. I want to start with them.

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Vulristics Vulnerability Score, Automated Data Collection and Microsoft Patch Tuesdays Q4 2020

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Vulristics Vulnerability Score, Automated Data Collection and Microsoft Patch Tuesdays Q4 2020. In this episode I would like to make a status update of my Vulristics project. For those who don’t know, in this project I retrieve publicly available vulnerability data and analyze it to better understand the severity of these vulnerabilities and better prioritize them. Currently, it is mainly about Microsoft Patch Tuesday vulnerabilities, but I have plans to go further. Also in this episode I want to demonstrate the new Vulristics features on Microsoft Patch Tuesday reports for October, November and December 2020.

Vulristics Vulnerability Scores, automated data collection and Microsoft Patch Tuesday Q4 2020

Patch Tuesdays Automated Data Collection

First of all, I dealt with the annoying collecting of the data for Microsoft Patch Tuesdays reports. Previously it took pretty long time. I had to go to Microsoft website and search for CVE IDs. After that, I had to get the comments from various Vulnerability Management vendors and researchers blogs (Tenable, Qualys, Rapid7, ZDI). I wanted this to be as much automated as possible. I have added some code to make CVE search requests on the Microsoft website for a date range (including the second Tuesday of the month). I also figured out how to make searches on the Vulnerability Management vendors blogs. So, now to get a Microsoft Patch Tuesday report it’s only necessary to set the year and month.

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