CVE-2009-4645

What it is

Directory traversal vulnerability in web_client_user_guide.html in Accellion Secure File Transfer Appliance before 8_0_105 allows remote attackers to read arbitrary files via a .. (dot dot) in the lang parameter.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of data exposure.

Exploit odds

2.8% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2010-02-19 17:30 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-16 23:14 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 2.8% in the next 30 days (EPSS).
• Severity: 7.8 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2010-02-19 17:30 UTC

Last modified

2026-06-16 23:14 UTC

Exploit probability

2.8% · EPSS, next 30 days

Weakness

CWE-22 · Path traversal

Record status

Modified

Affected

• Accellion Secure File Transfer Appliance 7_0_135
• Accellion Secure File Transfer Appliance 7_0_178
• Accellion Secure File Transfer Appliance 7_0_189
• Accellion Secure File Transfer Appliance 7_0_259
• Accellion Secure File Transfer Appliance 7_0_296

Attack profile CVSS 2.0 · 7.8

Attack vector

Network

Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2009-4645.md and follow it. Check whether this project is affected by CVE-2009-4645. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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