CVE-2022-3027

Arbitrary file write via unsanitized Wi-Fi SSID

Published Sep 13, 2022 · Updated Apr 16, 2025

Improper access control in Contec CMS8000 Patient Monitor firmware allows attackers to write files through a malicious Wi-Fi SSID. The Wi-Fi configuration path accepts non-standard SSID characters without proper control or sanitization when the monitor connects. Exploitation requires connection to an attacker-controlled nearby access point and can write arbitrary files or corrupt displayed information.

CVSS severity6.9
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Contec CMS8000 Patient Monitor firmware allows attackers to write files through a malicious Wi-Fi SSID. The Wi-Fi configuration path accepts non-standard SSID characters without proper control or sanitization when the monitor connects. Exploitation requires connection to an attacker-controlled nearby access point and can write arbitrary files or corrupt displayed information.

The record

CVE
CVE-2022-3027
Published
Sep 13, 2022
Updated
Apr 16, 2025
Vendor
Contec Medical Systems Co., Ltd.
Product
CMS8000 Patient Monitor
Classifications
CWE-419
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 13, 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

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Contec Medical Systems Co., Ltd. · CMS8000 Patient Monitorversion=All

Published CVSS scores

6.9CISACVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.7CISA ICS-CERTCVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-419Unprotected Primary Channel

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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