Security readout for executives and security teams
Plain-English summary
Fresenius Kabi Agilia Link+ can send data without encryption if users or integrations reach the service over TCP/80. For executives, the concern is avoidable exposure of medical device communications in clinical networks, with potential confidentiality, integrity, and availability impact, not a confirmed active attack campaign.
Executive priority
Treat as a high-priority medical technology exposure review. Prioritize sites where Agilia Link+ is network reachable across broad internal segments or untrusted paths, because encryption is available but not enforced.
Technical view
CVE-2021-41835 is CWE-327 in Fresenius Kabi Agilia Link+ version 3.0. The service offers TLS on TCP/443 but does not force encryption or redirect TCP/80 traffic to HTTPS. CVSS 3.1 is 7.3, network exploitable, low complexity, no privileges or user interaction, with low C/I/A impact.
Likely exposure
Exposure is likely where Fresenius Kabi Agilia Link+ version 3.0, or unspecified affected Agilia Link+ versions, remain reachable over unencrypted TCP/80 on clinical or operational networks.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. The weakness is practical when an attacker can observe or influence network traffic to the affected service, but the provided sources do not describe public exploit tooling or attack activity.
Researcher notes
Evidence is narrow: the bundle identifies plaintext transport caused by lack of HTTP-to-HTTPS enforcement. It does not provide packet details, patch versions, or exploit observations. Validate exposure defensively without publishing traffic contents or attack procedures.
Mitigation direction
- Prefer the encrypted service on TCP/443 for all Agilia Link+ access.
- Disable or block TCP/80 where operationally safe and vendor-approved.
- Check Fresenius Kabi and CISA advisory guidance for supported remediation.
- Limit network reachability to trusted clinical management networks only.
- Review compensating controls before making clinical system changes.
Validation and detection
- Inventory Fresenius Kabi Agilia Link+ deployments and confirm versions.
- Verify whether TCP/80 is reachable from user, server, and network segments.
- Confirm workflows use TCP/443 rather than unencrypted TCP/80.
- Review network captures or logs for cleartext Agilia Link+ traffic.
- Document any version ambiguity and request vendor confirmation.
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-327: 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-2021-41835 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
- High
- CVSS
- 7.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
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:L/I:L/A:L3.93.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.3HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
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.
Use of a Broken or Risky Cryptographic Algorithm
Use of a Broken or Risky Cryptographic Algorithm represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.