Dashboard / CVE-2026-119425

CVE-2026-119425

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 56/100
Published: 2026-10-30 Modified: 2026-10-30 First seen: 2026-10-30 Status: active

Attack Surface

Adjacent Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Adjacent
AC: Low
PR: None
UI: None
S: X
AT: None
VC: Low
VI: Low
VA: None

Description

OPNsense core 26.1.6 through 26.7.7 contains an authentication bypass vulnerability in the captive portal roaming feature that lets unauthenticated attackers hijack authorized client sessions by spoofing unauthenticated MAC-to-IP observations. Attackers on the same Layer-2 segment can send forged gratuitous ARP replies binding their IP to a victim's MAC, gaining portal access with traffic attributed to the victim.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
opnsense core 26.1.6
opnsense core 26.1.6

References & Advisories (7)

Bug Bounty Relevance

56 / 100
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

5.3 / 10.0 v4.0
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/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

EPSS — Exploitation Probability

0.31%
Raw Score 0.003130
Percentile 24.2%
Date 2026-11-02

EPSS Trend

2026-11-02
0.00313
2026-11-01
0.00313
2026-10-31
0.00313

Intelligence Sources

mitre ref →
nvd ref →

External Links