CVE-2019-16759

vbulletin

Published 24 Sept 2019 · updated 17 Jun 2026 · Analyzed

9.8 Critical · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 3 Nov 2021, with a remediation deadline of 3 May 2022 for US federal agencies.

Required action: Apply updates per vendor instructions.

Description

vBulletin 5.x through 5.5.4 allows remote command execution via the widgetConfig[code] parameter in an ajax/render/widget_php routestring request.

References

packetstormsecurity.com/files/154623/vBulletin-5.x-0-Day-Pre-Auth-Remote-Command-Execution.html · Exploit, Third Party Advisory, VDB Entry
packetstormsecurity.com/files/154648/vBulletin-5.x-Pre-Auth-Remote-Code-Execution.html · Exploit, Third Party Advisory, VDB Entry
packetstormsecurity.com/files/155633/vBulletin-5.5.4-Remote-Command-Execution.html · Exploit, Third Party Advisory, VDB Entry
packetstormsecurity.com/files/158829/vBulletin-5.x-Remote-Code-Execution.html · Exploit, Third Party Advisory, VDB Entry
packetstormsecurity.com/files/158830/vBulletin-5.x-Remote-Code-Execution.html · Exploit, Third Party Advisory, VDB Entry
packetstormsecurity.com/files/158866/vBulletin-5.x-Remote-Code-Execution.html · Exploit, Third Party Advisory, VDB Entry
seclists.org/fulldisclosure/2020/Aug/5 · Exploit, Mailing List, Third Party Advisory
arstechnica.com/information-technology/2019/09/public-exploit-code-spawns-mass-attacks-against-high-severity-vbulletin-bug/ · Exploit, Press/Media Coverage, Third Party Advisory
seclists.org/fulldisclosure/2019/Sep/31 · Exploit, Mailing List, Third Party Advisory
www.theregister.co.uk/2019/09/24/vbulletin_vbug_zeroday/ · Press/Media Coverage, Third Party Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-16759 · US Government Resource