Improper certificate validation in med-united epa4all
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Spoofing, Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-295 and CWE-347.
Summary
In epa4all, prior to version 2026-05-20, an attacker who can intercept the TLS connection between epa4all and the ePA backend can complete the VAU handshake with attacker-controlled keys and obtain the session encryption keys. All inner HTTP traffic (patient consent decisions, medication data, document operations, authorization tokens, and entitlement queries) becomes readable and modifiable. The attacker can also inject arbitrary requests through the hijacked channel. This issue has been patched in version 2026-05-20.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| med-united | epa4all | before 2026-05-20 | 2026-05-20 | Patch available | CNA |
- epa4all Vendormed-united Affected before 2026-05-20 Fixed in 2026-05-20 Patch available CNA
Remediation
- Fix · CNA epa4all (med-united) Fixed in 2026-05-20
Timeline
- 2026-10-02 Threatist record created from CVE-2026-48021
References
More med-united vulnerabilities
- TI-2026-39236 TLS Certificate Verification Disabled on CXF Transport Clients in epa4all CVSS 3.1HIGH 8.1
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences