Security readout for executives and security teams
Plain-English summary
This flaw lets a logged-in network attacker create firmware updates that affected B. Braun medical communication modules may accept as legitimate. That could let someone tamper with device behavior or data paths. The sources do not show active exploitation, but the integrity impact is high for connected clinical equipment.
Executive priority
Treat this as a high-priority medical device integrity risk, especially where affected modules are networked. Prioritize inventory and vendor-guided remediation over emergency disruption, because sources do not cite active exploitation but the potential tampering impact is serious.
Technical view
CVE-2020-25166 is CWE-347: improper cryptographic signature verification for firmware updates. Affected B. Braun SpaceCom L81/U61 and earlier, Battery Pack SP with Wi-Fi, and Data module compactplus A10/A11 can accept attacker-generated firmware with arbitrary content. CVSS 3.1 is 7.6: network, low complexity, low privileges, no user interaction.
Likely exposure
Exposure is most likely in healthcare environments using the named B. Braun Space communication, Wi-Fi battery, or compactplus data modules. The bundle does not identify all affected Battery Pack SP with Wi-Fi versions, so inventory confirmation is necessary.
Exploitation context
The CVE is not listed as CISA KEV in the provided bundle. No cited source states active exploitation. The described attack requires network reachability and low privileges, then abuses firmware-update trust rather than a public unauthenticated entry point.
Researcher notes
The available evidence supports firmware signature-verification weakness and arbitrary-content firmware acceptance. It does not provide exploit proof, active exploitation, full Battery Pack SP version detail, or a specific fix in the supplied bundle. Validation should focus on version exposure, update controls, and vendor advisory status.
Mitigation direction
- Check B. Braun and CISA guidance for approved remediation or firmware actions.
- Inventory affected B. Braun modules and record exact firmware or hardware versions.
- Restrict device management and update paths to authorized clinical engineering networks.
- Block untrusted network access to affected medical device communications components.
- Coordinate remediation windows with patient-safety and biomedical engineering owners.
Validation and detection
- Identify all SpaceCom, Battery Pack SP with Wi-Fi, and compactplus modules in use.
- Verify SpaceCom is not L81/U61 or earlier unless remediated.
- Verify Data module compactplus is not A10 or A11 unless remediated.
- Review firmware-update records for unexpected or unauthorized changes.
- Confirm affected device management interfaces are not reachable from untrusted networks.
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-347: 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-2020-25166 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
- 7.6 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/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:L/UI:N/S:U/C:L/I:H/A:L2.84.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.6HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cisa.gov/uscert/ics/advisories/icsma-20-296-02CVE reference · x_refsource_CONFIRM
- https://www.bbraun.com/en/products-and-therapies/services/b-braun-vulnerability-disclosure-policy/security-advisory.htmlCVE reference · x_refsource_CONFIRM
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.
Improper Verification of Cryptographic Signature
Improper Verification of Cryptographic Signature represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.