VMware vCenter Attackers Drop JSP Webshell Disguised as Performance Update

Cybersecuritynews •Tushar Subhra Dutta • August 18, 2026

A fast-moving campaign is turning a VMware vCenter flaw into a route to full control of virtual infrastructure. Attackers are abusing CVE-2026-59310, a critical path traversal bug in the Syslog Server, to run commands as root without a normal login. The activity moved from disclosure to widespread exploitation in days. QUIRSO mapped 361 affected IP […]

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Active Exploitation of VMware vCenter Path Traversal Vulnerability CVE-2026-59310 A critical vulnerability in VMware vCenter, tracked as CVE-2026-59310, is being actively exploited, allowing attackers to execute arbitrary code via a path traversal flaw in the Syslog Server. This vulnerability, disclosed on July 30, 2026, was added to CISA's Known Exploited Vulnerabilities Catalog on August 18, 2026. Attackers are leveraging this flaw to gain full control over virtual infrastructures, with reports indicating at least 361 affected IP addresses. The exploitation escalated rapidly, with a public proof of concept released on August 17, 2026. A separate vulnerability, CVE-2026-59309, has also been identified but is considered possibly unrelated. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has issued warnings regarding the ongoing exploitation. Organizations using affected VMware vCenter deployments are urged to take immediate action to mitigate risks. 3 sources 77

Extracted Entities

VMware vCenter Attackers Drop JSP Webshell Disguised as Performance Update

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Extracted Entities

Attack Types (1)

CVEs (1)

CWE Weaknesses (1)

MITRE ATT&CK (2)

Tools (1)