Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2025-71279

33
FAUCET Score

CVE-2025-71279 is a critical security vulnerability affecting XenForo versions prior to 2.3.7, specifically impacting Passkey-based authentication, which an attacker could exploit to compromise user accounts. Rated with a CVSS score of 9.8 (Critical), this flaw has a network attack vector, low attack complexity, and requires no privileges or user interaction, leading to high impacts on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, public exploit code is unavailable, and its EPSS score indicates a very low probability of exploitation, despite some community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.3.0, < 2.3.7CPE match
cpe:2.3:a:xenforo:xenforo:*:*:*:*:*:*:*:*
< 2.3.7CPE matchmatch criteria
cpe:2.3:a:xenforo:xenforo:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

9.3CRITICAL

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.45%
Probability of exploitation in next 30 days
EPSS Percentile
36.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0045 is in the 14th percentile among its peer group of 36,862 CVEs.

Social Chatter

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.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

vulncheck.com / advisories/xenforo-passkey-security-bypass
Third Party Advisory
xenforo.com / community/threads/xenforo-2-3-7-released-includes-security-fixes.232121
Release Notes