CVE-2026-65639Network attack vector

Root command execution via insufficient feed-rule validation

Published Sep 10, 2026 · Updated Sep 10, 2026

OS command injection in ConfigServer Security & Firewall allows remote attackers controlling rule feeds to execute arbitrary commands as root. The advanced-rule parser accepts command-bearing data from configured allow or deny feeds without sufficient validation before root-privileged command processing. Exploitation requires control of a configured feed; original releases from 2.15 onward and WebPros releases before 16.30 contain the vulnerable parser.

CVSS severityUnavailable
Unscored
EPSS probability1.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in ConfigServer Security & Firewall allows remote attackers controlling rule feeds to execute arbitrary commands as root. The advanced-rule parser accepts command-bearing data from configured allow or deny feeds without sufficient validation before root-privileged command processing. Exploitation requires control of a configured feed; original releases from 2.15 onward and WebPros releases before 16.30 contain the vulnerable parser.

The record

CVE
CVE-2026-65639
Published
Sep 10, 2026
Updated
Sep 10, 2026
Vendor
WebPros
Product
ConfigServer Security & Firewall
Classifications
T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 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=2.15 <16.30

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WebPros · ConfigServer Security & Firewallversion=2.15 <16.30
ConfigServer · ConfigServer Security & Firewallversion=2.15 <*

Published CVSS scores

No CVSS assessment is available in this record.

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1059.004Unix Shell

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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