Security readout for executives and security teams
Plain-English summary
CVE-2021-31562 concerns weak SSL/TLS protection in Fresenius Kabi Agilia Link+ v3.0. An attacker on the network may be able to read or alter supposedly protected traffic or impersonate a trusted party. The published impact is limited to confidentiality and integrity, not availability.
Executive priority
Treat this as a moderate medical-technology security issue. It does not indicate direct device shutdown, but weak transport security can undermine trust in sensitive operational communications. Prioritize visibility, segmentation, and vendor-confirmed remediation for deployed Agilia Link+ systems.
Technical view
The issue is classified as CWE-327: use of a broken or risky cryptographic algorithm. CVSS 3.1 is 6.5, network exploitable, low complexity, no privileges, and no user interaction. The affected-product evidence names Fresenius Kabi Agilia Link+, with the description specifically naming version 3.0.
Likely exposure
Exposure is most relevant to organizations running Fresenius Kabi Agilia Link+ in environments where its SSL/TLS-protected communications are reachable by untrusted or insufficiently segmented networks. The source bundle does not define all affected versions beyond the v3.0 description.
Exploitation context
The CVSS vector indicates remote network attack conditions with no authentication or user interaction. The bundle does not state known active exploitation, and KEV status is false. Expected attacker goals are eavesdropping, traffic manipulation, or impersonation rather than service disruption.
Researcher notes
Evidence supports weak SSL/TLS configuration and risky cryptography, not a specific public exploit chain. The affected-version data is incomplete in the bundle: one field says unspecified, while the description names Agilia Link+ version 3.0. Avoid assuming broader Fresenius Kabi product impact without vendor confirmation.
Mitigation direction
- Review Fresenius Kabi and CISA advisory guidance for supported remediation or configuration changes.
- Identify Agilia Link+ deployments and confirm software or firmware versions.
- Limit network access to trusted clinical or operational management networks.
- Monitor for unexpected TLS errors, impersonation indicators, or unusual communication paths.
- Prioritize remediation where device traffic crosses shared or less trusted networks.
Validation and detection
- Inventory Fresenius Kabi Agilia Link+ assets and record installed versions.
- Compare discovered versions against the CISA advisory and vendor guidance.
- Review network segmentation around systems communicating with Agilia Link+.
- Confirm only trusted systems can reach Agilia Link+ communication interfaces.
- Document compensating controls if vendor remediation is unavailable or delayed.
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-2021-31562 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
- 6.5 (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: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:L/I:L/A:N3.92.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.5MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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.
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.