CVE-2023-38831 is a vulnerability tracked across 5 threat clusters and 7 intelligence report mentions on ThreatCluster. First observed November 20, 2025; most recent activity June 8, 2026.
Two Russia-aligned cyber campaigns are exploiting the WinRAR vulnerability CVE-2025-8088 against Ukrainian targets nearly a year after it was patched. The flaw, a path traversal vulnerability, allows attackers to write…
The CVE-2025-8088 vulnerability in WinRAR is being exploited by various threat actors for initial access and to deploy malware. The flaw allows attackers to use Alternate Data Streams to write malicious files to…
Microsoft announced plans to disable the NTLM authentication protocol by default in future Windows releases due to its security vulnerabilities that have been exploited in cyberattacks. NTLM, introduced in 1993, has…
CYFIRMA Research and Advisory Team has identified Bactor Ransomware while monitoring underground forums. This ransomware targets Windows systems and affects multiple industries and technologies. The findings are part of…
Multiple ransomware strains, including Bactor, ChickenKiller, and Midnight, have been identified by CYFIRMA Research and Norton. Bactor and ChickenKiller ransomware target Windows systems, while Midnight ransomware has…