Security readout for executives and security teams
Plain-English summary
This CVE concerns a Fresenius Kabi Agilia infusion system WiFi component exposing a default configuration page without authentication. A remote unauthenticated attacker could change exposed configuration values, including network settings. The listed impact is integrity only, not data theft or service outage, but medical device context raises operational concern.
Executive priority
Treat as a moderate-priority medical device configuration exposure. It is not reported as actively exploited in the provided sources, but unauthenticated network configuration changes on infusion infrastructure warrant prompt inventory, segmentation review, and vendor-guided remediation planning.
Technical view
CVE-2021-33843 is CWE-552: files or directories accessible to external parties. The source describes Agilia SP MC WiFi vD25 and prior, while the affected list names Agilia Connect WiFi with unspecified versions. CVSS 3.1 is 5.3: network reachable, low complexity, no privileges, no user interaction, low integrity impact.
Likely exposure
Likely exposure is limited to Fresenius Kabi Agilia Connect WiFi or Agilia SP MC WiFi deployments where the default configuration page is reachable on a network. Version evidence is incomplete because sources list both vD25 and prior and unspecified affected versions.
Exploitation context
The bundle does not show CISA KEV listing or any cited evidence of active exploitation. The issue is network-accessible and unauthenticated, so risk depends heavily on network segmentation, device reachability, and whether exposed configuration values can affect clinical or operational workflows.
Researcher notes
Do not assume broader Fresenius Kabi products are affected from this bundle. The source data is narrow and partially inconsistent on product/version naming. Validation should focus on reachability and configuration exposure without attempting unsafe changes on clinical devices.
Mitigation direction
- Check Fresenius Kabi and CISA guidance for product-specific remediation.
- Inventory affected Agilia WiFi components and confirm installed versions.
- Restrict configuration interface access to trusted management networks only.
- Block untrusted network paths to affected device configuration pages.
- Monitor device network settings for unauthorized changes.
- Coordinate remediation with clinical engineering and device owners.
Validation and detection
- Identify Fresenius Kabi Agilia Connect WiFi or SP MC WiFi assets.
- Confirm whether versions include vD25 or prior where version data exists.
- Verify configuration pages are not reachable from untrusted networks.
- Review recent network setting changes for unexpected modifications.
- Document compensating controls when vendor remediation status is unclear.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-552: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-33843 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N3.91.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cisa.gov/uscert/ics/advisories/icsma-21-355-01CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Files or Directories Accessible to External Parties
Files or Directories Accessible to External Parties represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.