HIGH
CVE-2021-33017
CWE-288Published: December 27, 2021· Updated: Jun 17, 2026
8.8
CVSS v3.1
Official Description
The standard access path of the IntelliBridge EC 40 and 60 Hub (C.00.04 and prior) requires authentication, but the product has an alternate path or channel that does not require authentication.
Technical Analysis
CVE-2021-33017 requires adjacent network access, limiting remote exploitation but still posing risk in shared or local network environments.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorAdjacent
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Vendors & Products
philips4 product(s)
intellibridge ec40 firmwareintellibridge ec40intellibridge ec80 firmwareintellibridge ec80
Source: NVD CPE · 4 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (2)
→
https://www.cisa.gov/uscert/ics/advisories/icsma-21-322-01Third Party Advisory · US Government Resource
→
https://www.cisa.gov/uscert/ics/advisories/icsma-21-322-01Third Party Advisory · US Government Resource
Quick Facts
CVE IDCVE-2021-33017
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-288
CISA KEVNo
Affected1 vendor(s)
PublishedDec 27, 2021
Related CVEs (CWE-288)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2021-33017 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.