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CVE-2009-4645· NVD / CVE Program· CNA mitre

Directory traversal vulnerability in web_client_user_guide.html in Accellion Secure File Transfer Appliance before 8_0_105 allows remote att

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.

HighCVSS 7.8 · v2.0—Proof of concept No fix recorded
Published
Feb 19, 2010
Updated
Jun 16, 2026
EPSS
2.8% · 86th percentile
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Report tools

JSON

Action score

32

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.8%

Affected systems

VendorProduct
accellionsecure file transfer appliance

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • accellion secure file transfer appliance7_0_135
  • accellion secure file transfer appliance7_0_178
  • accellion secure file transfer appliance7_0_189
  • accellion secure file transfer appliance7_0_259
  • accellion secure file transfer appliance7_0_296

Same product

accellion: all records

Other highest-scoring records for the same primary product.

  • CVE-2009-4646Static code injection vulnerability in the administrative web interface in Accellion Secure File Transfer Appliance allows remote authentica
    37Monitor
  • CVE-2009-4644Accellion Secure File Transfer Appliance before 8_0_105 allows remote authenticated administrators to bypass the restricted shell and execut
    37Monitor
  • CVE-2008-7012courier/1000@/api_error_email.html (aka "error reporting page") in Accellion File Transfer Appliance FTA_7_0_178, and possibly other version
    33Monitor
  • CVE-2009-4648Accellion Secure File Transfer Appliance before 8_0_105 does not properly restrict access to sensitive commands and arguments that run with
    28Monitor
  • CVE-2009-4647Cross-site scripting (XSS) vulnerability in Accellion Secure File Transfer Appliance before 7_0_296 allows remote attackers to inject arbitr
    17Monitor
  • CVE-2008-3850Cross-site scripting (XSS) vulnerability in Accellion File Transfer FTA_7_0_135 allows remote attackers to inject arbitrary web script or HT
    17Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Exploit-DB entry ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Exploit-DB entryremote2010-02-10

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. First PoC-10 d
  2. Published
  3. TodaySep 30, 2026+6067 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
C · data can be read
Integrity
none
Availability
none
Attack complexity
Low
Confidentiality impact
C
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSS vector

AV:N/AC:L/Au:N/C:C/I:N/A:N

nvd-primary

Root cause

A user-supplied file name is joined with the allowed directory, but the result is never checked to confirm it is still inside that directory.

The bug in code

The whole CWE-22 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
const file = path.join(ROOT, req.query.name);res.sendFile(file);

Fixed

ts
const file = path.resolve(ROOT, req.query.name);if (!file.startsWith(ROOT + path.sep)) {  return res.sendStatus(400);}res.sendFile(file);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records