CVE-2022-22836Network attack vector

Authenticated file creation via PUT path traversal

Published Jan 8, 2022 · Updated Aug 3, 2024

Path traversal in CoreFTP Server before 727 allows remote authenticated users to create files outside the intended directory via HTTP PUT. HTTP PUT path handling accepts ../ segments and resolves the requested destination without containing it within the intended upload directory. Valid server credentials are required; the bounded result is creation of attacker-controlled files outside that directory.

CVSS severity6.5
Medium
EPSS probability5.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in CoreFTP Server before 727 allows remote authenticated users to create files outside the intended directory via HTTP PUT. HTTP PUT path handling accepts ../ segments and resolves the requested destination without containing it within the intended upload directory. Valid server credentials are required; the bounded result is creation of attacker-controlled files outside that directory.

The record

CVE
CVE-2022-22836
Published
Jan 8, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-22, T1105
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 8, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.0NIST NVDAV:N/AC:L/Au:S/C:N/I:P/A:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1105Ingress Tool Transfer

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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