---
title: "CVE-2009-2936: The Command Line Interface (aka Server CLI… | CubePath"
description: "The Command Line Interface (aka Server CLI or administration interface) in the master process in the reverse proxy server in Varnish before 2.1.0…"
language: en
source: https://cubepath.com/security/cve/CVE-2009-2936
---

# CVE-2009-2936: The Command Line Interface (aka Server CLI… | CubePath

## Description

The Command Line Interface (aka Server CLI or administration interface) in the master process in the reverse proxy server in Varnish before 2.1.0 does not require authentication for commands received through a TCP port, which allows remote attackers to (1) execute arbitrary code via a vcl.inline directive that provides a VCL configuration file containing inline C code; (2) change the ownership of the master process via param.set, stop, and start directives; (3) read the initial line of an arbitrary file via a vcl.load directive; or (4) conduct cross-site request forgery (CSRF) attacks that leverage a victim's location on a trusted network and improper input validation of directives. NOTE: the vendor disputes this report, saying that it is "fundamentally misguided and pointless.

Official description from the CVE record, published by mitre. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2009-2936)

## Key data

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.63824 (63.8% probability)

Percentile

99.2%

Scores of

Nov 10, 2026

Model

v2026.06.15

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [20100329 Medium security hole in Varnish reverse proxy](http://www.securityfocus.com/archive/1/510360/100/0/threaded)  (securityfocus.com) mailing-list
- [varnish-cache.org/wiki/CLI](http://www.varnish-cache.org/wiki/CLI)
- [varnish-cache.org/changeset/3865](http://www.varnish-cache.org/changeset/3865)
- [20100329 Re: \[Full-disclosure\] Medium security hole in Varnish reverse proxy](http://www.securityfocus.com/archive/1/510368/100/0/threaded)  (securityfocus.com) mailing-list
- [FEDORA-2010-6719](http://lists.fedoraproject.org/pipermail/package-announce/2010-April/040359.html)  (lists.fedoraproject.org) vendor-advisory

## Timeline

1. ID reserved Aug 23, 2009
2. Record published Apr 5, 2010
3. Record last updated Aug 7, 2024

## Look up another CVE

## About CubePath

CubePath is a cloud provider with data centers in Europe and the United States. It offers VPS, bare metal servers and DDoS protection.

[Cloud VPS](https://cubepath.com/vps) [DDoS protection](https://cubepath.com/ddos-protection)

Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 20:00 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)