CVE-2026-25602

MEDIUMNVD 4.44.4—
EchelonGraph scoreMEDIUM confidence

Score 4.4 from GitHub Security Advisory published 2026-05-20. NVD baseline CVSS 4.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
4.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: <0.1%CVSS: 4.4Exploit: None knownExposed services: Not assessed

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

Insufficient Verification of Data Authenticity in the feedback function of Mesalvo MEONA (MEONA Client and MEONA Server). The MEONA Client transmits the recipient address of a feedback report to the MEONA Server, and the server sends the report to the transmitted address instead of the address configured on the server. The feedback function is available only in the MEONA administration area, which requires one of the administrative roles ADMINISTRATOR, SUPERADMINISTRATOR or TYPIST (catalogue editing), or the PHARMACIST role holding the PHARMACY_ADMINISTRATOR right, assigned explicitly by the operating hospital's administrators. Such a user who modifies the client request can cause the MEONA Server to send a message with content of the user's choosing, from the sender address configured on the server, to a recipient of the user's choosing, within the limits permitted by the operator's mail relay. The message can be used for social engineering because it appears to originate from an internal hospital system. Exploitation requires a MEONA account with one of the administrative roles named above and access to the operating hospital's internal network; MEONA is operated exclusively within closed hospital networks without exposure to the public Internet, and where a hospital permits remote access to that network at all, it is only through the hospital's own remote-access infrastructure (e.g. VPN) under the hospital's control. The message contains only the recipient, subject and text entered by the user; no data of other users or patients is disclosed. Mesalvo is not aware of any exploitation outside the reported security test. This issue affects MEONA Client and MEONA Server in versions 2024.10, 2025.04 (before 2025.04.24) and 2026.03 (before 2026.03.02). MEONA 2025.04.24 and 2026.03.02 (planned Q4 2026) enforce the configured recipient address on the server. Operators can restrict at their mail relay which recipients the MEONA sender address may reach.

CVSS v3
4.4
EG Score
4.4MEDIUMmedium confidence
EG Risk
20
EG Risk 20/100

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 (value × EchelonGraph’s weight)
Severity44% × 45%
The EG Score, 4.4 of 10.
Exploitation0% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
EPSS PROB
<0.1%
EPSS %ILE
below the 1st
KEV
Not listed

Published

May 20, 2026

Last Modified

September 25, 2026

Advisory Details (1)

Auto-updated Jun 16, 2026
No fix on record yet.
generic

Prescribing Security: Uncovering 5 CVEs in a Healthcare Application | SecCore GmbH

https://seccore.at/blog/cves-meona/

Vendor Advisories for CVE-2026-25602(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 21× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 93 of 192 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 7 repeat rows among the latest 100 are merged into the row they repeat. The 99 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-10 20:00 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  2. 2026-10-09 20:07 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  3. 2026-10-08 17:11 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  4. 2026-10-07 23:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  5. 2026-10-04 23:21 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  6. 2026-10-03 14:25 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  7. 2026-10-01 19:49 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  8. 2026-09-30 15:03 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  9. 2026-09-28 13:51 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  10. 2026-09-26 15:58 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  11. 2026-09-26 00:26 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  12. 2026-09-25 15:26 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  13. 2026-09-25 14:53 UTCEG score recompute
  14. 2026-09-25 14:53 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  15. 2026-09-24 14:03 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  16. 2026-09-18 19:27 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  17. 2026-09-16 14:07 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  18. 2026-09-16 05:15 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  19. 2026-09-13 16:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  20. 2026-09-12 15:01 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  21. 2026-09-11 14:52 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  22. 2026-09-10 09:34 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  23. 2026-09-08 22:00 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  24. 2026-09-06 13:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  25. 2026-09-04 05:06 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
Show 68 more
  1. 2026-09-02 14:11 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  2. 2026-09-01 13:53 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  3. 2026-08-30 01:22 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  4. 2026-08-28 21:41 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  5. 2026-08-27 14:25 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  6. 2026-08-26 14:46 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  7. 2026-08-25 13:48 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  8. 2026-08-23 16:56 UTCEG score recompute
  9. 2026-08-23 16:56 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  10. 2026-08-23 00:19 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  11. 2026-08-21 22:55 UTCEG score recompute
  12. 2026-08-21 22:55 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  13. 2026-08-20 22:55 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  14. 2026-08-20 18:55 UTCEG score recompute
  15. 2026-08-20 18:55 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  16. 2026-08-19 17:03 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  17. 2026-08-18 13:48 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  18. 2026-08-17 13:47 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  19. 2026-08-17 09:54 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  20. 2026-08-16 03:30 UTCEG score recompute
  21. 2026-08-16 03:30 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  22. 2026-08-16 02:14 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  23. 2026-08-15 01:30 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  24. 2026-08-15 01:27 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  25. 2026-08-14 02:02 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  26. 2026-08-12 23:28 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  27. 2026-08-12 00:03 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  28. 2026-08-11 00:35 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  29. 2026-08-10 00:57 UTCEG score recompute
  30. 2026-08-10 00:57 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  31. 2026-08-09 13:46 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  32. 2026-08-09 01:32 UTCEG score recompute
  33. 2026-08-09 01:32 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  34. 2026-08-08 16:37 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  35. 2026-08-07 20:08 UTCEG score recompute
  36. 2026-08-07 20:08 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  37. 2026-08-06 20:43 UTCEG score recompute
  38. 2026-08-06 20:43 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  39. 2026-08-06 13:46 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  40. 2026-08-05 21:17 UTCEG score recompute
  41. 2026-08-05 21:17 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  42. 2026-08-05 19:17 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  43. 2026-08-04 15:10 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  44. 2026-08-03 16:54 UTCEG score recompute
  45. 2026-08-03 16:54 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  46. 2026-08-03 10:36 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  47. 2026-08-02 17:10 UTCEG score recompute
  48. 2026-08-02 17:10 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  49. 2026-08-02 02:26 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  50. 2026-08-01 17:44 UTCEG score recompute
  51. 2026-08-01 17:44 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  52. 2026-08-01 04:16 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  53. 2026-07-30 16:27 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  54. 2026-07-28 15:36 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  55. 2026-07-26 14:54 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  56. 2026-07-26 08:15 UTCEG score recompute
  57. 2026-07-26 08:15 UTCGHSA enrichmentGHSA-r47h-9xx2-mw53 · GitHub CVSS 4.4
  58. 2026-07-24 14:17 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  59. 2026-07-23 03:07 UTCEG score recompute
  60. 2026-07-22 14:08 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  61. 2026-07-20 17:08 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  62. 2026-07-19 02:28 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  63. 2026-07-18 10:04 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  64. 2026-07-16 17:03 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  65. 2026-07-15 16:57 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  66. 2026-07-15 02:00 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  67. 2026-07-13 22:30 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile
  68. 2026-07-13 06:13 UTCEPSS rescoreEPSS <0.1% · below the 1st percentile

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-25602?
CVE-2026-25602 is a medium vulnerability published on May 20, 2026. Insufficient Verification of Data Authenticity in the feedback function of Mesalvo MEONA (MEONA Client and MEONA Server). The MEONA Client transmits the recipient address of a feedback report to the MEONA Server, and the server sends the report to the transmitted address instead of the address…
When was the CVE record for CVE-2026-25602 published?
The CVE record for CVE-2026-25602 was published on May 20, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of September 25, 2026; the record at its source may have been updated since.
Is CVE-2026-25602 actively exploited?
CVE-2026-25602 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a <0.1% probability of exploitation in the next 30 days (below the 1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-25602?
CVE-2026-25602 has a CVSS v3 base score of 4.4 (NVD).
How do I remediate CVE-2026-25602?
No fix for CVE-2026-25602 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-25602 are linked in the Vendor Advisories panel on this page.

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