CVEs / CVE-2019-16759
CVE-2019-16759: vBulletin PHP Module Remote Code Execution Vulnerability
- Known exploited in the CISA KEV catalog since 3 Nov 2021
- critical 9.8 CVSS 3.1 (NVD)
- EPSS 99.7% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
The PHP module within vBulletin contains an unspecified vulnerability that allows for remote code execution via the widgetConfig[code] parameter in an ajax/render/widget_php routestring request.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| n/a n/a | n/a | — |
Exploitation
| In CISA KEV since | 3 Nov 2021 |
|---|---|
| Due date for US federal agencies | 3 May 2022 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-94 |
References
- CVE-2019-16759 on NVD
- CVE-2019-16759 in the CISA KEV catalog
- http://packetstormsecurity.com/files/154623/vBulletin-5.x-0-Day-Pre-Auth-Remote-Command-Execution.html Exploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/154648/vBulletin-5.x-Pre-Auth-Remote-Code-Execution.html Exploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/155633/vBulletin-5.5.4-Remote-Command-Execution.html Exploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/158829/vBulletin-5.x-Remote-Code-Execution.html Exploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/158830/vBulletin-5.x-Remote-Code-Execution.html Exploit, Third Party Advisory, VDB Entry
- http://packetstormsecurity.com/files/158866/vBulletin-5.x-Remote-Code-Execution.html Exploit, Third Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2020/Aug/5 Exploit, Mailing List, Third Party Advisory
- https://arstechnica.com/information-technology/2019/09/public-exploit-code-spawns-mass-attacks-against-high-severity-vbulletin-bug/ Exploit, Press/Media Coverage, Third Party Advisory
- https://seclists.org/fulldisclosure/2019/Sep/31 Exploit, Mailing List, Third Party Advisory
- https://www.theregister.co.uk/2019/09/24/vbulletin_vbug_zeroday/ Press/Media Coverage, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-16759 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.