Vulnerability Report

CVE-2020-17496

CISA KEV Active

Title: Remote command execution in vBulletin

Other

Proof Of Concept

PoC Available for CVE-2020-17496

CWE Category CWE-74
Published Date Aug 12, 2020
Modified Date Jun 17, 2026
Exploit Status Available
Score 9.8 CVSS v3.1
Exploit Probability (EPSS)
87.74%

Vulnerability Summary

CVE-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.

Impacted Vendors

J
jelsoft 1
V
vbulletin 1

Reference Links

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://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
CVSS v3.1
Source Entity [email protected]
Severity CRITICAL
9.8
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v3.1
Source Entity 134c704f-9b21-4f2e-91b3-4a467353bcc0
Severity CRITICAL
9.8
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
Source Entity [email protected]
Severity HIGH
7.5
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2020-17496 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/ludy-dev/vBulletin_5.x-tab_panel-RCE
View Code
GitHub https://github.com/ctlyz123/CVE-2020-17496
View Code
MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Stack

No specific products linked.