CVE-2025-67858

Firewall configuration manipulation via unchecked interface names

Published Jan 8, 2026 · Updated Jan 8, 2026

Argument injection in Foobar Oy Foomuuri before 0.31 allows local users to alter firewall rules via crafted D-Bus interface names. DbusCommon.add_interface() passes the unchecked interface value through out() into JSON supplied to nft, so quotes, backslashes, control characters, or embedded JSON can change the generated configuration. The system D-Bus service runs as root; a caller needs local D-Bus access, and the demonstrated consequence is firewall-configuration integrity loss rather than code execution.

CVSS severity7.0
High
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Argument injection in Foobar Oy Foomuuri before 0.31 allows local users to alter firewall rules via crafted D-Bus interface names. DbusCommon.add_interface() passes the unchecked interface value through out() into JSON supplied to nft, so quotes, backslashes, control characters, or embedded JSON can change the generated configuration. The system D-Bus service runs as root; a caller needs local D-Bus access, and the demonstrated consequence is firewall-configuration integrity loss rather than code execution.

The record

CVE
CVE-2025-67858
Published
Jan 8, 2026
Updated
Jan 8, 2026
Vendor
Foobar Oy
Product
Foomuuri
Classifications
CWE-88, T1562.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=? <0.31

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Foobar Oy · Foomuuriversion=? <0.31

Published CVSS scores

7.0SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-88Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
T1562.004Impair Defenses: Disable or Modify System Firewall

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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