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CVE-2021-43550

21
FAUCET Score

CVE-2021-43550 describes a vulnerability where Philips Patient Information Center iX (versions C.02 and C.03) and Efficia CM Series (revisions A.01 to C.0x and 4.0) utilize a weak cryptographic algorithm, potentially exposing sensitive patient information during communication. This medium-severity vulnerability (CVSS 6.5) can be exploited with low complexity over an adjacent network, leading to high confidentiality impact without requiring user interaction or privileges. While there is no evidence of active exploitation, public exploit code, or KEV listing, the vulnerability has garnered some community discussion and media coverage, indicating awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
c.02CPE matchmatch criteria
cpe:2.3:a:philips:patient_information_center_ix:c.02:*:*:*:*:*:*:*
c.03CPE matchmatch criteria
cpe:2.3:a:philips:patient_information_center_ix:c.03:*:*:*:*:*:*:*
>= a.01, <= c.0xCPE matchmatch criteria
cpe:2.3:o:philips:efficia_cm_firmware:*:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:philips:efficia_cm_firmware:4.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N

Attack Vector
ADJACENT_NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.22%
Probability of exploitation in next 30 days
EPSS Percentile
12.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0022 is in the 16th percentile among its peer group of 1,802 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / uscert/ics/advisories/icsma-21-322-02
Third Party AdvisoryUS Government Resource