RSSAmplifier

Blog

Alexander V. Leonov

Vulnerability Management and more

avleonov.comRSS feed ↗10 posts

Latest posts

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 [ ]

About Remote Code Execution - Microsoft SharePoint (CVE-2026-58644) vulnerability

About Remote Code Execution - Microsoft SharePoint (CVE-2026-58644) vulnerability. Information about this vulnerability was published on July 14 as part of the July Microsoft Patch Tuesday. The vulnerability in Microsoft SharePoint Server, caused by a deserialization flaw (CWE-502), allows an attacker with Site Owner privileges or higher to inject and remotely execute arbitrary code on [ ]

About Elevation of Privilege - Microsoft SharePoint (CVE-2026-56164) vulnerability.

About Elevation of Privilege - Microsoft SharePoint (CVE-2026-56164) vulnerability. The vulnerability was disclosed in the July Microsoft Patch Tuesday release on July 14. The vulnerability, related to missing authentication for a critical function (CWE-306), allows an unauthenticated attacker to remotely elevate their privileges. It is quite interesting that the CVSS scores for the vulnerability…

About Elevation of Privilege - NT OS Kernel (CVE-2026-42980) vulnerability

About Elevation of Privilege - NT OS Kernel (CVE-2026-42980) vulnerability. Information about this vulnerability was disclosed as part of the June Microsoft Patch Tuesday on June 9. The vulnerability was not specifically highlighted in Microsoft Patch Tuesday reviews published by VM vendors. This Microsoft Windows NT OS Kernel elevation of privilege vulnerability is caused by [ ]

About Remote Code Execution - ViPNet Client (BDU:2026-09885) vulnerability

About Remote Code Execution - ViPNet Client (BDU:2026-09885) vulnerability. The ViPNet Client software suite is designed to protect corporate users' workstations by providing secure data exchange over IP networks, controlling the network activity of applications and operating system components, and performing personal firewall functions (in the ViPNet Client for Windows version). ViPNet Client…

Июльский Linux Patch Wednesday

July Linux Patch Wednesday. A total of 2,017 vulnerabilities were addressed (539 in the Linux kernel and 504 in Chromium). For comparison, there were 1,888 vulnerabilities in June. Once again, a new record. Moreover, next month will most likely set another record, as 1,704 vulnerabilities have already been addressed 2.5 weeks before the August LPW. [ ]

July Microsoft Patch Tuesday

July Microsoft Patch Tuesday. In the second week of July, I was on vacation in St. Petersburg. After that, I got caught up with a bunch of other tasks, so I'm only publishing this roundup now. Better late than never, especially considering how unusual this MSPT turned out to be. 😉 In total, 571 vulnerabilities [ ]

July "In the Trend of VM" (#29): Microsoft Exchange Server vulnerability

July "In the Trend of VM" (#29): Microsoft Exchange Server vulnerability. Here is my traditional monthly roundup of trending vulnerabilities, according to Positive Technologies. The previous June edition featured four vulnerabilities. This time, there's only one. 🗞 Post on Habr (rus) 🗒 Digest on the PT website (rus) 🔻 XSS - Microsoft Exchange (CVE-2026-42897). The [ ]

About Cross Site Scripting - Microsoft Exchange (CVE-2026-42897) vulnerability

About Cross Site Scripting - Microsoft Exchange (CVE-2026-42897) vulnerability. The vulnerability was fixed on May 14 outside the regular Microsoft Patch Tuesday cycle. Improper neutralization of input during web page generation (CWE-79, XSS) in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network. In practical terms, this means that a remote [ ]

June Linux Patch Wednesday

June Linux Patch Wednesday. A total of 1,888 vulnerabilities (324 in the Linux kernel, and a whopping 728 in Chromium ❗️). For comparison, there were 1,638 vulnerabilities in May. The increase isn't as dramatic as it was from April to May, but it's still a new record. One of the vulnerabilities has been flagged as [ ]