CVE-2026-75166CWE-269CWE-276privilege-escalation

CVE-2026-75166

High · published September 4, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
54.2
In the wild
Unconfirmed
What it is

Insecure Permission vulnerability in MBS-Solutions X-Serie Gateway firmware V6_00_05 allows the low-privileged service user to execute /usr/bin/tcpdump as root without a password. By leveraging the tcpdump -z option, an authenticated attacker can achieve arbitrary command execution.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00744 · 54.2th percentile
Weaknesses
CWE-269 · Improper Privilege Management; CWE-276 · Incorrect Default Permissions
Published
2026-09-04T20:17Z
References (3)
https://en.mbs-solutions.de/mbs · [email protected]https://en.mbs-solutions.de/xserie · [email protected]https://github.com/SilviaMun/vulnerability-research/tree/main/CVE-2026-75166 · [email protected]
EPSS history
Timeline
  • 06 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 04 SEP 00:00Z
    Insecure Permission vulnerability in MBS-Solutions X-Serie Gateway firmware V6_00_05 allows the low-privileged service user to execute /usr/bin/tcpdump as root…
    cvelistv5