CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Called exploited 11 days after disclosure.
Measured from the CVE publication date to the earliest of 3 KEV catalogues that list it.
The life of this vulnerability
- CVE published
- First KEV listing11d
- Last KEV listing8d
- Last sighting3d
Gaps are compressed to equal steps. The elapsed time is printed under each.
Which catalogues call it exploited
- CISA KEVUS federallisted Aug 18, 2026
- EUVDENISA, European Unionlisted Aug 10, 2026
- VulnCheck KEVcommercial researchlisted Aug 10, 2026
- CIRCLaggregator, mirrors the abovelisted Aug 10, 2026, not counted
3 catalogues list it. CIRCL aggregates the others and is shown but not counted.
Public exploitation evidence
- reported exploitationcydome.io/maritime-cybersecurity-bulletin-august-21st-2026/
- reported exploitationwww.cisa.gov/sites/default/files/feeds/known_exploited_vulne
- reported exploitationmedium.com/@quirso_de/global-exploitation-of-cve-2026-59310-
- reported exploitationprevidian.com/CVE-2026-59310
- reported exploitationmedium.com/@quirso_de/active-exploitation-of-cve-2026-59310-
5 public reports collected from VulnCheck and CIRCL, first on Aug 10, 2026. Each links to its original source. We have not verified them.
Description
VMware vCenter contains a directory traversal vulnerability in the Syslog server. A malicious actor with network access to vCenter may exploit this issue to execute arbitrary code.
Required action (CISA)
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
