CVE-2025-34116Public exploitNetwork attack vector

Authenticated command execution via unsanitized htpasswd invocation

Published Jul 15, 2025 · Updated May 15, 2026

OS command injection in proxy.cgi in IPFire before 2.19 Core Update 101 allows remote authenticated users to execute shell commands. The adduser path interpolates NCSA-derived credentials into a single-string system call to /usr/sbin/htpasswd without neutralizing shell metacharacters. An administrator session is required, and successful injection runs commands with the web server's unprivileged account.

CVSS severity8.7
High
EPSS probability1.68%
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 proxy.cgi in IPFire before 2.19 Core Update 101 allows remote authenticated users to execute shell commands. The adduser path interpolates NCSA-derived credentials into a single-string system call to /usr/sbin/htpasswd without neutralizing shell metacharacters. An administrator session is required, and successful injection runs commands with the web server's unprivileged account.

The record

CVE
CVE-2025-34116
Published
Jul 15, 2025
Updated
May 15, 2026
Vendor
IPFire Project
Product
IPFire
Classifications
CWE-78, CWE-306, CWE-20, CAPEC-88, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 15, 2025CVE publishedPublication date reported by the CVE source.
  2. May 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <2.19 Core Update 101

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IPFire Project · IPFireversion=0 <2.19 Core Update 101

Published CVSS scores

8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-306Missing Authentication for Critical Function
CWE-20Improper Input Validation
CAPEC-88OS Command Injection
T1059.004Unix Shell

Public exploit references

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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