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Vulnerabilities

Vulnerability · CVE-2020-17496

vBulletin PHP Module Remote Code Execution Vulnerability

Published Aug 12, 2020 · catalog updated Jun 16, 2026 · vBulletin vBulletin

Patch now

CVE-2020-17496 is in the CISA known-exploited catalog, due May 3, 2022. Confirm vBulletin vBulletin against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Critical9.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
87.48%
Remediation
Remediation guidance
Affected products
cpe vbulletin/vbulletin · vendor vBulletin vBulletin

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. Initial-access exploit intelligence.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe vbulletin/vbulletinversion unspecified
  • vendor vBulletin vBulletinversion unspecified

How to fix CVE-2020-17496

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2020-17496 is in the CISA known-exploited catalog, due May 3, 2022. Confirm vBulletin vBulletin against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply updates per vendor instructions.

What should an analyst verify?

CWE-74: Injection. EPSS 87.48%. The CISA KEV listing is the exploitation evidence. A public exploit reference is linked in Sources. That is not the same as confirmed exploitation. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 12, 2020 · Catalog

    Detected

    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.

  2. Nov 3, 2021 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. May 3, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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.

Sources

  • CISA KEVConfirmed exploitationCVE-2020-17496

    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.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2020-17496

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2020-17496

    30-day exploitation probability 87.5%

    first.org
  • Metasploit ModulesPublic exploit moduleexploit_multi/http/vbulletin_widget_template_rce

    Public module reference (excellent). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-2020-17496

    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.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2020-17496

    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.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.