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Cisco Talos Blog
Cisco Talos
Microsoft Patch Tuesday for September 2025 – Snort rules and prominent vulnerabilities
Microsoft has released its monthly security update for September 2025, which includes 86 vulnerabilities affecting a range of products.
ToolShell: Details of CVEs affecting SharePoint servers
Cisco Talos is aware of the ongoing exploitation of CVE-2025-53770 and CVE-2025-53771 in the wild. These are path traversal vulnerabilities affecting SharePoint Server Subscription Edition, SharePoint Server 2016, and SharePoint Server 2019.
Scarcity signals: Are rare activities red flags?
Talos analyzed six months of PowerShell network telemetry and found that rare domains are over three times more likely to be malicious compared to frequently contacted ones.
Available now: 2024 Year in Review
Download Talos' 2024 Year in Review now, and access key insights on the top targeted vulnerabilities of the year, network-based attacks, email threats, adversary toolsets, identity attacks, multi-factor authentication (MFA) abuse, ransomware and AI-based attacks.
Weathering the storm: In the midst of a Typhoon
Cisco Talos has been closely monitoring reports of widespread intrusion activity against several major U.S. telecommunications companies, by a threat actor dubbed Salt Typhoon. This blog highlights our observations on this campaign and identifies recommendations for detection and prevention.
Microsoft Patch Tuesday for December 2024 contains four critical vulnerabilities
The Patch Tuesday for December of 2024 includes 72 vulnerabilities, including four that Microsoft marked as “critical.” The remaining vulnerabilities listed are classified as “important.”
November Patch Tuesday release contains three critical remote code execution vulnerabilities
The Patch Tuesday for November of 2024 includes 91 vulnerabilities, including two that Microsoft marked as “critical.” The remaining 89 vulnerabilities listed are classified as “important.”
How LLMs could help defenders write better and faster detection
Can LLM tools actually help defenders in the cybersecurity industry write more effective detection content? Read the full research
15 vulnerabilities discovered in software development kit for wireless routers
Talos researchers discovered these vulnerabilities in the Jungle SDK while researching other vulnerabilities in the LevelOne WBR-6013 wireless router.