Critical SharePoint RCE flaw exploited to steal machine keys
Hackers are actively exploiting the critical CVE-2026-50522 vulnerability in Microsoft SharePoint to steal machine keys and maintain access even after affected servers are patched. [...]
Cyber Brief · Jul 21 · 9 stories
Tuesday, July 21, 2026 · sent to 1 subscribers
Critical SharePoint RCE CVE-2026-50522 Under Active Exploitation After Public PoC
A third SharePoint Server flaw patched by Microsoft as part of its Patch Tuesday update for July 2026 has come under active exploitation, per watchTowr. The vulnerability in question is CVE-2026-50522 (CVSS score: 9.8), a critical deserialization of untrusted data in Microsoft Office SharePoint th…
Qilin Ransomware Attackers Exploit PAN-OS Authentication Bypass for Initial Access
Threat actors have been observed exploiting a now-patched high-severity Palo Alto Networks PAN-OS vulnerability as an entry point to deploy Qilin (aka Agenda) ransomware on victim environments. Arctic Wolf Labs said it investigated multiple intrusions in June 2026 that began with the exploitation …
WordPress Core "wp2shell" RCE flaws get public exploits, patch now
Public exploits have been released for the critical "wp2shell" remote code execution vulnerabilities affecting WordPress Core, making it imperative that administrators patch their sites immediately. [...]
Tycon Systems TPDIN-Monitor-WEB2
View CSAF Summary Successful exploitation of these vulnerabilities could result in an attacker accessing sensitive credentials, disrupting connected infrastructure, or manipulating physical equipment, which could present a physical safety risk. The following versions of Tycon Systems TPDIN-Monitor-…
Rockwell Automation 1734 POINT I/O
View CSAF Summary Successful exploitation of this vulnerability could allow for an attacker to cause a denial-of-service condition on the product. The following versions of Rockwell Automation 1734 POINT I/O are affected: 1734 POINT I/O 3.023 CVSS Vendor Equipment Vulnerabilities v3…
ServiceNow’s sandbox escape RCE hole now exploited in the wild
A sandbox security hole that could lead to remote code execution (RCE), patched last week by ServiceNow, is being actively exploited in the wild, according to a report from threat intel firm Defused. The report, posted on X, said the firm is “observing in-the-wild exploitation of the ServiceNow…
SonicWall SMA zero-days were exploited weeks before disclosure
Two recently disclosed SonicWall SMA 1000 vulnerabilities – CVE-2026-15409 and CVE-2026-15410 – were exploited in zero-day attacks for weeks, allowing threat actors to install custom malware on vulnerable VPN appliances, Volexity researchers revealed. The intrusions began as early as Ju…
ServiceNow pre-auth RCE exploited in the wild (CVE-2026-6875)
Attackers have begun exploiting CVE-2026-6875, a critical pre-authentication vulnerability in the ServiceNow AI Platform, according to threat intelligence firm Defused. About the vulnerability ServiceNow AI is a Platform-as-a-Service that lets organizations build and automate digital workflows. CVE…