CVE-2026-48021

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 98% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
9.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.1Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.1
EG Score
9.1(medium)
EG Risk
56(Track)
EG Risk 56/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity91% × 45%
Exploitation0% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

July 24, 2026

Last Modified

July 30, 2026

Advisory Details (3)

Auto-updated Sep 16, 2026
🔬 Proof of concept available. Patch available. Sources: github_release, github.
generic🟡 PoC Available

CVE-2026-48021: VAU Server Spoofing Patient-Data MITM in epa4all

https://www.machinespirits.com/advisory/aa49f0
github Patch Available

VAU Server Authentication Bypass via Missing A_24624-01 Verification in epa4all · Advisory · med-united/epa4all · GitHub

https://github.com/med-united/epa4all/security/advisories/GHSA-vvh7-x6c7-46gh
github_release Patch Available

2026-05-20

Patch available: med-united/epa4all 2026-05-20

https://github.com/med-united/epa4all/releases/tag/2026-05-20

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 43× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-18 22:28 UTCEG score recompute
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 02:58 UTCEG score recompute
  4. 2026-09-17 01:58 UTCEG score recompute
  5. 2026-09-16 14:08 UTCEPSS rescore
  6. 2026-09-16 06:39 UTCEG score recompute
  7. 2026-09-16 05:15 UTCEPSS rescore
  8. 2026-09-15 09:35 UTCEG score recompute
  9. 2026-09-13 17:07 UTCEG score recompute
  10. 2026-09-13 16:47 UTCEPSS rescore
  11. 2026-09-12 18:22 UTCEG score recompute
  12. 2026-09-11 16:36 UTCEG score recompute
  13. 2026-09-11 14:53 UTCEPSS rescore
  14. 2026-09-10 13:35 UTCEG score recompute
  15. 2026-09-10 09:35 UTCEPSS rescore
  16. 2026-09-09 08:44 UTCEG score recompute
  17. 2026-09-08 22:01 UTCEPSS rescore
  18. 2026-09-07 21:23 UTCEG score recompute
  19. 2026-09-07 16:01 UTCEPSS rescore
  20. 2026-09-06 16:48 UTCEG score recompute
  21. 2026-09-06 13:47 UTCEPSS rescore
  22. 2026-09-05 19:22 UTCEG score recompute
  23. 2026-09-04 17:05 UTCEG score recompute
  24. 2026-09-04 12:48 UTCEG score recompute
  25. 2026-09-04 05:06 UTCEPSS rescore
Show 66 more
  1. 2026-09-01 23:15 UTCEG score recompute
  2. 2026-09-01 13:54 UTCEPSS rescore
  3. 2026-08-30 21:44 UTCEG score recompute
  4. 2026-08-30 19:17 UTCEPSS rescore
  5. 2026-08-30 04:31 UTCEG score recompute
  6. 2026-08-30 01:22 UTCEPSS rescore
  7. 2026-08-30 00:16 UTCEG score recompute
  8. 2026-08-28 21:41 UTCEPSS rescore
  9. 2026-08-27 21:06 UTCEG score recompute
  10. 2026-08-27 14:25 UTCEPSS rescore
  11. 2026-08-25 15:19 UTCEG score recompute
  12. 2026-08-25 13:49 UTCEPSS rescore
  13. 2026-08-24 18:05 UTCEG score recompute
  14. 2026-08-24 12:10 UTCEG score recompute
  15. 2026-08-22 00:26 UTCEG score recompute
  16. 2026-08-21 23:49 UTCEPSS rescore
  17. 2026-08-20 22:57 UTCEG score recompute
  18. 2026-08-20 22:55 UTCEPSS rescore
  19. 2026-08-19 20:35 UTCEG score recompute
  20. 2026-08-19 17:04 UTCEPSS rescore
  21. 2026-08-18 18:52 UTCEG score recompute
  22. 2026-08-18 13:48 UTCEPSS rescore
  23. 2026-08-17 16:36 UTCEG score recompute
  24. 2026-08-17 13:47 UTCEPSS rescore
  25. 2026-08-16 19:01 UTCEG score recompute
  26. 2026-08-16 14:56 UTCEPSS rescore
  27. 2026-08-16 06:02 UTCEG score recompute
  28. 2026-08-16 02:14 UTCEPSS rescore
  29. 2026-08-15 04:39 UTCEG score recompute
  30. 2026-08-15 01:30 UTCEPSS rescore
  31. 2026-08-13 23:01 UTCEG score recompute
  32. 2026-08-13 22:00 UTCEPSS rescore
  33. 2026-08-12 17:23 UTCEG score recompute
  34. 2026-08-12 13:51 UTCEPSS rescore
  35. 2026-08-11 15:58 UTCEG score recompute
  36. 2026-08-11 03:16 UTCEG score recompute
  37. 2026-08-11 00:00 UTCEPSS rescore
  38. 2026-08-09 17:22 UTCEG score recompute
  39. 2026-08-09 13:46 UTCEPSS rescore
  40. 2026-08-06 17:24 UTCEG score recompute
  41. 2026-08-06 13:47 UTCEPSS rescore
  42. 2026-08-05 20:13 UTCEG score recompute
  43. 2026-08-05 19:17 UTCEPSS rescore
  44. 2026-08-04 18:39 UTCEG score recompute
  45. 2026-08-04 15:10 UTCEPSS rescore
  46. 2026-08-04 14:25 UTCEG score recompute
  47. 2026-08-04 10:39 UTCEPSS rescore
  48. 2026-08-03 12:53 UTCEG score recompute
  49. 2026-08-03 10:36 UTCEPSS rescore
  50. 2026-08-02 02:57 UTCEG score recompute
  51. 2026-08-02 02:27 UTCEPSS rescore
  52. 2026-08-01 05:46 UTCEG score recompute
  53. 2026-08-01 04:16 UTCEPSS rescore
  54. 2026-07-30 17:00 UTCEG score recompute
  55. 2026-07-30 16:28 UTCEPSS rescore
  56. 2026-07-30 12:30 UTCEG score recompute
  57. 2026-07-30 04:00 UTCEG score recompute
  58. 2026-07-30 01:30 UTCEPSS rescore
  59. 2026-07-28 17:19 UTCEG score recompute
  60. 2026-07-28 15:37 UTCEPSS rescore
  61. 2026-07-27 15:23 UTCEG score recompute
  62. 2026-07-26 13:57 UTCEG score recompute
  63. 2026-07-26 02:56 UTCEG score recompute
  64. 2026-07-25 14:18 UTCEPSS rescore
  65. 2026-07-24 18:32 UTCEG score recompute
  66. 2026-07-24 18:31 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-48021?
CVE-2026-48021 is a critical vulnerability published on July 24, 2026. 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,…
When was CVE-2026-48021 disclosed?
CVE-2026-48021 was first published in the National Vulnerability Database on July 24, 2026, with the most recent update on July 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-48021 actively exploited?
CVE-2026-48021 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 97.5% of all scored CVEs.
What is the CVSS score of CVE-2026-48021?
CVE-2026-48021 has a CVSS v3 base score of 9.1 (NVD).
How do I remediate CVE-2026-48021?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-48021, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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