CVE-2017-17672 is a critical unauthenticated deserialization vulnerability affecting vBulletin through version 5.3.x. It allows remote attackers to achieve arbitrary file deletion and, in some cases, remote code execution due to unsafe use of PHP's unserialize() function within the publicly exposed cacheTemplates() API. With a CVSS score of 9.8 (Critical), this vulnerability has a low attack complexity and requires no user interaction, enabling full compromise of confidentiality, integrity, and availability. While not listed on CISA's KEV catalog, exploit code is publicly available on ExploitDB, and it has garnered significant community discussion and media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 5.0.1, <= 5.3.3CPE matchmatch criteria | cpe:2.3:a:vbulletin:vbulletin:*:*:*:*:*:*:*:* | ||
5.0.0CPE matchmatch criteria | cpe:2.3:a:vbulletin:vbulletin:5.0.0:beta_11:*:*:*:*:*:* | ||
5.0.0CPE matchmatch criteria | cpe:2.3:a:vbulletin:vbulletin:5.0.0:beta_28:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.