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0 mentions in 7 days · 0 in 30 days · 1 total · first seen Aug 12, 2026 · last Aug 12, 2026

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Attackers Exploit VMware vCenter Vulnerability to Gain Persistent Remote Access

Attackers actively exploit critical VMware vCenter flaw CVE-2026-59310, installing reverse_ssh backdoors on 361 hosts across 47 countries.

QUIRSO observed active exploitation of CVE-2026-59310 (CVSS 9.8), a directory-traversal flaw in VMware vCenter allowing arbitrary code execution, patched by Broadcom in late July. Attack chains deploy a malicious cron job running the open-source reverse_ssh tool for persistence, with compromised systems phoning home starting August 3, five days after disclosure. Forensics show 361 unique victim IPs in 47 countries, mostly Germany, the U.S., Turkey, Iran, and France, with the actor suspected to be an APT. Separately, Defused Cyber reports rising scanning indicative of exploitation of related CVE-2026-59309, an unauthenticated auth bypass in vmdir.

The Hacker NewsAug 12, 16:41 UTC · Aug 12, 2026Exploit / PoC in the wildCVE-2026-59310 CVE-2026-59309

Related CVEsby mentions

CVE-2026-593109.846%
Unauthenticated Path Traversal RCE in Broadcom VMware vCenter Server Syslog
CVE-2026-59310 is a directory traversal (CWE-22) vulnerability in the Syslog server component of VMware vCenter Server, rated critical at CVSS 9.8. It can be triggered over the network without authentication or user interaction, allowing a malicious actor with network access to vCenter to achieve arbitrary code execution. An attacker who exploits it gains code execution on the vCenter appliance, and reported campaigns show it has been used to establish persistent remote access and, by a suspected China-nexus actor, to deploy Babuk ransomware. Any organization running an affected version of vCenter Server is exposed, especially where the management interface is reachable from the internet; the available data does not specify affected version ranges. Exploitation is confirmed in the wild: CISA added the flaw to its Known Exploited Vulnerabilities catalog on 2026-08-18, it was reportedly exploited just five days after disclosure, and EPSS estimates a 45.9% probability of exploitation within 30 days (99th percentile).
· Broadcom (VMware) vCenter Server KEV ransomwarelarge
CVE-2026-593099.88%
VMware vCenter contains an authentication bypass vulnerability in the VMware Directory Service.
VMware vCenter contains an authentication bypass vulnerability in the VMware Directory Service. A malicious actor with network access to vCenter may exploit this issue to bypass authentication and gain unauthorized access to the system.
· vmware vcenter server—

Appears with

threat actor PurpleHaze 1 threat actor UNC5174 1 organization The Hacker News 1 product reverse_ssh 1 product VMware Tools 1 product VMware vCenter 1 vendor Broadcom 1 vendor Defused Cyber 1 vendor QUIRSO 1 vendor SentinelOne 1 vendor VMware 1

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