Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2020-17496

CVE-2020-17496CRITICAL

n/a n/a — vBulletin vBulletin

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  H  H  H    9.8   .8737   99.8   YES

AFFECTED
  Product  Versions  Fixed
  n/a      n/a –     —

TIMELINE
  Aug 12  Reserved by mitre
  Aug 12  Published (CNA: mitre)
  Nov 3   Added to CISA KEV, remediation due 2022-05-03

CWE-74 · CNA: mitre · CVSS v3.1 · 5 references · KEV due May 3, 2022

Description

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
August 12, 2020	Reserved	Reserved by mitre
August 12, 2020	Published	Published (CNA: mitre)
November 3, 2021	KEV ADDED	Added to CISA KEV, remediation due 2022-05-03

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
n/a	n/a	—	n/a	—

Weaknesses

CWE-74

References (5)

https://blog.exploitee.rs/2020/exploiting-vbulletin-a-tale-of-patch-fail/ [x_refsource_MISC]
https://cwe.mitre.org/data/definitions/78.html [x_refsource_MISC]
https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4445227-vbulletin-5-6-0-5-6-1-5-6-2-security-patch [x_refsource_MISC]
https://seclists.org/fulldisclosure/2020/Aug/5 [x_refsource_MISC]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-17496 [government-resource]

Authoritative record: CVE-2020-17496 at cve.org

Weaknesses: CWE-74

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2020-17496 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.