On July 19–20, 2025, various security companies and national CERTs published alerts about active exploitation of on-premise SharePoint servers. According to the reports, observed attacks did not require authentication, allowed attackers to gain full control over the infected servers, and were performed using an exploit chain of two vulnerabilities:
CVE-2025-49704 and CVE-2025-49706, publicly named “ToolShell”. Additionally, on the same dates, Microsoft released out-of-band security patches for the vulnerabilities CVE-2025-53770 and CVE-2025-53771, aimed at addressing the security bypasses of previously issued fixes for CVE-2025-49704 and CVE-2025-49706. The release of the new, “proper” updates has caused confusion about exactly which vulnerabilities attackers are exploiting and whether they are using zero-day exploits.
Read more…
Source: Kaspersky
Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox
Related:
- New Windows hack warning: Patch Intel systems now to block SWAPGSAttack exploits
August 6, 2019
A newly uncovered vulnerability affecting every Windows computer using an Intel processor built since 2012 could allow attackers to bypass safeguards and access information held in a system’s protected kernel memory. This new side-channel attack is built on previous research into other CPU vulnerabilities – such as Spectre and Meltdown – but this new vulnerability can bypass the ...
- Millions of Android Smartphones Vulnerable to Trio of Qualcomm Bugs
August 6, 2019
Security researchers from Tencent’s Blade Team are warning Android smartphone and tablet users of flaws in Qualcomm chipsets, called QualPwn. The bugs collectively allow hackers to compromise Android devices remotely simply by sending malicious packets over-the-air – no user interaction required. Three bugs make up QualPwn (CVE-2019-10539, CVE-2019-10540 and CVE-2019-10538). The prerequisite for the attack is ...
- Microsoft Lab Offers $300K For Working Azure Exploits
August 5, 2019
In an attempt to sniff out bugs in its Azure cloud platform, Microsoft announced at Black Hat USA 2019 on Monday that it will offer rewards of up to $300,000 for researchers who launch successful test exploits for the platform. Microsoft has launched a dedicated Azure cloud host testing environment, dubbed Azure Security Lab. The exclusive program will ...
- New Dragonblood vulnerabilities found in WiFi WPA3 standard
August 3, 2019
Earlier this year in April, two security researchers disclosed details about five vulnerabilities (collectively known as Dragonblood) in the WiFi Alliance’s recently launched WPA3 WiFi security and authentication standard. Yesterday, the same security researchers disclosed two new additional bugs impacting the same standard. The two researchers — Mathy Vanhoef and Eyal Ronen — found these two new bugs in ...
- Cyberattack warning to small plane owners: How your aircraft could be vulnerable
July 30, 2019
The alert from the DHS critical infrastructure computer emergency response team. warns that modern flight systems are vulnerable to hacking if a person manages to gain unrestricted access to an aircraft. The alert also recommends that small plane owners restrict unauthorized physical access to their aircraft the best they can. It warns that access should remain limited until ...
- Critical RCE Flaw in Palo Alto Gateways Hits Uber
July 22, 2019
A remote code-execution (RCE) vulnerability has been uncovered in the GlobalProtect portal and GlobalProtect Gateway interface security products from Palo Alto Networks. It’s an unusual zero-day case, having been previously unknown but inadvertently fixed in later releases — but some large companies could still be impacted, including Uber. The gateways provide virtual private network (VPN) access to ...