CVE-2019-16759 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2021-11-03
vBulletin 5.x through 5.5.4 contains a remote code execution vulnerability in its PHP module. An attacker can execute arbitrary commands by sending a specially crafted request to the ajax/render/widget_php routestring using the widgetConfig[code] parameter.
Yes. CVE-2019-16759 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.
How severe is CVE-2019-16759?
Critical severity, with a CVSS score of 9.8, published 3 November 2021.
Which products and versions are affected?
vBulletin vBulletin 5.x through 5.5.4.
Is there a fix for CVE-2019-16759?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2019-16759 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2019-16759?
Check whether you run Vbulletin. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Affected products
vBulletin vBulletin 5.x through 5.5.4
Timeline
2019-09-23: disclosed: Public exploit code released as a 0-day
2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog