Unknown baddies are abusing yet another critical Microsoft SharePoint bug to compromise victims’ SharePoint servers, the US government warned.
CVE-2026-20963 is a critical deserialization flaw in SharePoint that allows unauthenticated attackers to remotely execute code on the server without any user interaction, and Redmond fixed the issue as part of its January Patch Tuesday. At the time, the vulnerability was neither publicly known nor exploited, according to Microsoft, which deemed exploitation “less likely.” Fast forward to Wednesday when the US Cybersecurity and Infrastructure Agency added CVE-2026-20963 to its Known Exploited Vulnerabilities (KEV) catalog, gave federal agencies just three days to issue a patch..
Read more…
Source: The Register News
Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox
Related:
- Twitter API Abused to Uncover User Identities
February 4, 2020
Twitter said that malicious actors, with potential ties to state-sponsored groups, were abusing a legitimate function on its platform to unmask the identity of users. The social media giant said that on Dec. 24, 2019, it discovered a large network of fake accounts abusing a legitimate API (application programming interface) function on its platform that, when ...
- U.S. Battleground County Website Security Survey
February 3, 2020
Today McAfee released the results of a survey of county websites and county election administration websites in the 13 states projected as battleground states in the 2020 U.S. presidential elections. We found that significant majorities of these websites lacked the official government .GOV website validation and HTTPS website security measures to prevent malicious actors from launching copycat web domains ...
- Only three of the Top 100 international airports pass basic security checks
February 3, 2020
Only three of the world’s Top 100 international airports pass basic security checks, according to a report published last week by cyber-security firm ImmuniWeb. The three are the Amsterdam Schiphol Airport in the Netherlands, the Helsinki Vantaa Airport in Finland, and the Dublin International Airport in Ireland. According to ImmuniWeb, these three “may serve a laudable example not just to the ...
- TrickBot Switches to a New Windows 10 UAC Bypass to Evade Detection
February 3, 2020
The TrickBot trojan has evolved again to bolster its ability to elude detection, this time adding a feature that can bypass Windows 10 User Account Control (UAC) to deliver malware across multiple workstations and endpoints on a network, researchers have discovered. Researchers at Morphisec Labs team said they discovered code last March that uses the Windows ...
- EKANS Ransomware and ICS Operations
February 3, 2020
EKANS ransomware emerged in mid-December 2019, and Dragos published a private report to Dragos WorldView Threat Intelligence customers early January 2020. While relatively straightforward as a ransomware sample in terms of encrypting files and displaying a ransom note, EKANS featured additional functionality to forcibly stop a number of processes, including multiple items related to ICS ...
- Threat Actors Still Exploiting SharePoint Vulnerability to Attack Middle East Government Organizations
February 3, 2020
On September 10, 2019, we observed unknown threat actors exploiting a vulnerability in SharePoint described in CVE-2019-0604 to install several webshells on the website of a Middle East government organization. One of these webshells is the open source AntSword webshell freely available on Github, which is remarkably similar to the infamous China Chopper webshell. On January 10, 2020, we ...