CVE-2020-17496
CRITICALCISA KEVEPSS 100th pctlDescription
vBulletin 5.5.4 through 5.6.2 allows remote command execution via crafted subWidgets data in an ajax/render/widget_tabbedcontainer_tab_panel request. NOTE: this issue exists because of an incomplete fix for CVE-2019-16759.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Very high risk: more likely to be exploited than 100% of all known CVEs.
vBulletin PHP Module Remote Code Execution Vulnerability
The PHP module within vBulletin contains an unspecified vulnerability that allows for remote code execution via crafted subWidgets data in an ajax/render/widget_tabbedcontainer_tab_panel request. This CVE ID resolves an incomplete patch for CVE-2019-16759.
Apply updates per vendor instructions.
Remediation due: 2022-05-03
References
- https://blog.exploitee.rs/2020/exploiting-vbulletin-a-tale-of-patch-fail/
- https://cwe.mitre.org/data/definitions/78.html
- https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4445227-vbulletin-5-6-0-5-6-1-5-6-2-security-patch
- https://seclists.org/fulldisclosure/2020/Aug/5
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-17496
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-07.