CVE-2021-33017

Unauthenticated hub access via alternate channel

Published Dec 27, 2021 · Updated Sep 16, 2024

Authentication bypass in Philips IntelliBridge EC40 and EC80 Hub C.00.04 and earlier allows remote attackers to gain unauthorized hub access. The standard access path enforces authentication, but Philips has not disclosed which alternate path or channel accepts requests without it. Reachability requires access to the physically or logically isolated patient-monitoring network, where successful access permits software execution, configuration changes, and file viewing or updates.

CVSS severity8.1
High
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in Philips IntelliBridge EC40 and EC80 Hub C.00.04 and earlier allows remote attackers to gain unauthorized hub access. The standard access path enforces authentication, but Philips has not disclosed which alternate path or channel accepts requests without it. Reachability requires access to the physically or logically isolated patient-monitoring network, where successful access permits software execution, configuration changes, and file viewing or updates.

The record

CVE
CVE-2021-33017
Published
Dec 27, 2021
Updated
Sep 16, 2024
Vendor
Philips
Product
IntelliBridge EC40 Hub
Classifications
CWE-288, T1210
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 27, 2021CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 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?

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

  1. Affected versionversion=unspecified <=C.00.04

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Philips · IntelliBridge EC40 Hubversion=unspecified <=C.00.04
Philips · IntelliBridge EC80 Hubversion=unspecified <=C.00.04

Published CVSS scores

5.8NIST NVDAV:A/AC:L/Au:N/C:P/I:P/A:P
8.8NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.1ICS-CERTCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/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.

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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-288Authentication Bypass Using an Alternate Path or Channel
T1210Exploitation of Remote Services

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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