CVE-2024-55591

CVE

Threat entity extracted from intelligence sources

Frequency

occurrences

First Seen

January 15, 2026

Last Seen

September 10, 2026

API

Exploited in Wild

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Ransomware Use

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Public Exploits

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Attack Vector

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Vulnerability Overview

Exploitation Activity

Exploitation Intelligence

Microsoft September 2026 Patch Tuesday: Record 974 Vulnerabilities Addressed72.9

On September 8, 2026, Microsoft released a record-breaking 974 patches for vulnerabilities across its products, including two actively exploited zero-day vulnerabilities: CVE-2026-81963 and CVE-2026-85880. These vulnerabilities allow local attackers to escalate privileges to SYSTEM level, posing sig...

Critical RCE Vulnerabilities Discovered in Fortinet Products72.8

Fortinet has identified multiple critical vulnerabilities in its FortiSandbox and FortiAuthenticator products, which could allow unauthenticated attackers to execute arbitrary code remotely. The vulnerabilities are tracked as CVE-2026-44277 and CVE-2026-26083, both published on May 12, 2026. FortiAu...

Qilin Ransomware Targets Retelit, Major Telecom Provider in Italy69.5

The Qilin ransomware group has reportedly targeted Retelit SpA, a leading telecommunications operator in Italy. This attack is part of a broader campaign that has seen a significant increase in ransomware incidents attributed to Qilin since the start of 2026. The group exploits known vulnerabilities...

The Gentlemen Ransomware Group Exploits Fortinet Flaws and AI Tools69.5

The Gentlemen ransomware group has emerged as a significant threat in 2026, exploiting vulnerabilities in Fortinet systems, particularly CVE-2024-55591, an authentication bypass flaw. They have been observed using brute-force attacks on approximately 1,000 Fortinet VPN instances, often leveraging we...