IIS (Internet Information Services) is Microsoft's web server and application hosting platform for Windows, used to serve websites and web applications.
Overview
IIS (Internet Information Services) is Microsoft's web server and application hosting platform for Windows, used to serve websites and web applications. Its security posture matters because misconfigurations, exposure of credentials in code, and supply-chain risks in the .NET ecosystem can compromise hosted apps, and OS-level updates can affect availability and resilience of IIS deployments.
Related Threat Clusters
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Critical Oracle WebLogic Flaw Under Active Exploitation
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has added CVE-2026-21962, a critical vulnerability affecting Oracle HTTP Server and WebLogic Server Proxy Plug-in, to its Known Exploited Vulnerabilities…
17 articles · Updated August 25, 2026 -
Jewelbug APT Group Engages in Espionage and Cryptocurrency Fraud
The Jewelbug APT group, based in China, has been conducting simultaneous cyber espionage and cryptocurrency fraud operations. Utilizing a single command-and-control platform named XG-Web, the group has compromised over…
15 articles · Updated August 13, 2026 -
FamousSparrow APT Expands Targeting to Azerbaijani Energy Sector
FamousSparrow, a China-aligned APT group, launched a multi-wave cyberespionage campaign against an Azerbaijani oil and gas company from late December 2025 to February 2026. The attackers employed an evolved DLL…
10 articles · Updated May 13, 2026 -
Iranian Cyberespionage Targets Iraqi Government Officials
In 2024, Iranian APT group BladedFeline launched a cyber campaign against Kurdish and Iraqi government officials, utilizing advanced malware tools including the Shahmaran backdoor and the Whisper backdoor. The attacks…
2 articles · Updated May 13, 2026 -
Critical RCE Vulnerability in Windchill and FlexPLM Triggers Urgent Alerts
PTC Inc. has disclosed a critical vulnerability, CVE-2026-4681, in its Windchill and FlexPLM software that allows for remote code execution through the deserialization of trusted data. The vulnerability has been…
4 articles · Updated March 24, 2026 -
Multiple Critical Vulnerabilities Exploited in SonicWall and SharePoint Systems
In July 2026, several critical vulnerabilities were exploited, impacting SonicWall SMA1000 appliances and SharePoint servers. Two zero-day vulnerabilities, CVE-2026-15409 and CVE-2026-15410, were discovered in SonicWall…
2 articles · Updated July 28, 2026 -
Attackers Exploit WDigest Vulnerability to Harvest Plaintext Credentials
A multi-stage cyber attack targeted IIS servers, beginning with enumeration commands and escalating to credential extraction using Mimikatz. The attackers uploaded a steganographic webshell and executed a…
3 articles · Updated July 2, 2026 -
Critical Vulnerabilities in ConnectWise ScreenConnect Exploited in Active Attacks
ConnectWise ScreenConnect has been compromised by two critical vulnerabilities, CVE-2024-1708 and CVE-2024-1709, which allow attackers to bypass authentication and execute remote code. The vulnerabilities were disclosed…
9 articles · Updated April 29, 2026 -
Critical RCE Vulnerability in Windows HTTP.sys Patched
Microsoft patched CVE-2026-47291, a critical remote code execution vulnerability in the Windows HTTP.sys protocol stack. This flaw allows unauthenticated remote attackers to exploit an integer overflow during HTTP/1.x…
10 articles · Updated July 10, 2026 -
Pro-Iranian Group Ababil of Minab Claims Cyberattack on LACMTA
On April 9, 2026, the pro-Iranian hacking group Ababil of Minab claimed responsibility for a cyberattack on the Los Angeles County Metropolitan Transportation Authority (LACMTA). The group alleged access to critical…
5 articles · Updated April 15, 2026
Recent Intelligence Reports
- Telerik UI Padding-Oracle Bug Chained to Unauthenticated RCE — Thehackernews · September 7, 2026
- Malicious Apache Modules Hijack Brazilian Government Site Traffic to Push Betting Pages — Thehackernews · September 2, 2026
- CISA adds Oracle WebLogic bug to its list of exploited vulnerabilities | news — Scworld · August 25, 2026
- Researchers Link 'Jewelbug' Chinese APT to Hack-for — Infosecurity-Magazine · August 14, 2026
- >> Read this brief on krypteiasec.com — krypteiasec.com · July 29, 2026
- Attackers execute a complete ransomware operation in under 24 hours | news — Scworld · July 16, 2026
- Windows HTTP.sys TLS Header Parsing Flaw Enables Kernel RCE — Mallory.Ai · July 11, 2026
- Attackers Downgrade WDigest Protection to Dump Plaintext Credentials With Mimikatz — Gbhackers · July 2, 2026