CVE-2022-2102Network attack vector

Arbitrary file upload via client-modified workflow code

Published Jun 24, 2022 · Updated Apr 16, 2025

Improper workflow enforcement in Sécheron SEPCOS firmware allows remote attackers to upload PHP-executable files through the web interface. The upload sequence trusts client-modifiable response code that a later script reuses, bypassing file-extension controls and storing attacker-chosen files in a PHP-executable location. The unauthenticated network path requires access to the embedded web server and places attacker-controlled PHP content in a server-executable location.

CVSS severity9.4
Critical
EPSS probability0.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper workflow enforcement in Sécheron SEPCOS firmware allows remote attackers to upload PHP-executable files through the web interface. The upload sequence trusts client-modifiable response code that a later script reuses, bypassing file-extension controls and storing attacker-chosen files in a PHP-executable location. The unauthenticated network path requires access to the embedded web server and places attacker-controlled PHP content in a server-executable location.

The record

CVE
CVE-2022-2102
Published
Jun 24, 2022
Updated
Apr 16, 2025
Vendor
Sécheron
Product
SEPCOS Control and Protection Relay Firmware
Classifications
CWE-434, CWE-841, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 24, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=All versions <1.23.21 changes=[{"at":"1.24.8","status":"unaffected"},{"at":"1.25.3","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Sécheron · SEPCOS Control and Protection Relay Firmwareversion=All versions <1.23.21 changes=[{"at":"1.24.8","status":"unaffected"},{"at":"1.25.3","status":"unaffected"}]

Published CVSS scores

5.0NISTAV:N/AC:L/Au:N/C:N/I:P/A:N
9.4ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
7.5NISTCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
CWE-841Improper Enforcement of Behavioral Workflow
T1190Exploit Public-Facing Application

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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