CVE-2026-59836

CRITICALNVD 9.89.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.2% (11th percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 7.5 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2026-07-14) is not newer than that change (2026-07-15), so it does not.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this week
9.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 9.8Exploit: None knownExposed services: Not assessed

Upgrade to FortiClientEMS version 7.4.6 or above (from the CVE record's solution, Fortinet, Inc.) — apply it.

A improper certificate validation vulnerability in Fortinet FortiClientEMS 7.4.3 through 7.4.5, FortiClientEMS 7.4.0 through 7.4.1, FortiClientEMS 7.2 all versions may allow attacker to information disclosure via

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
44
EG Risk 44/100

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)
Severity98% × 45%
The EG Score, 9.8 of 10.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: Upgrade to FortiClientEMS version 7.4.6 or above (from the CVE record's solution, Fortinet, Inc.). Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
11th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

Upgrade to FortiClientEMS version 7.4.6 or above (from the CVE record's solution, Fortinet, Inc.). Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

July 14, 2026

Last Modified

July 15, 2026

Advisory Details (1)

Auto-updated Oct 10, 2026
Fix named in the CVE record's solution (Fortinet, Inc.).
Web page

PSIRT | FortiGuard Labs

https://fortiguard.fortinet.com/psirt/FG-IR-26-147

Vendor Advisories for CVE-2026-59836(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 16× in last 7d / 49× 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 100 of 366 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. None are among the latest 100 rows. The 266 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-14 08:46 UTCEG score recompute
  2. 2026-10-14 08:46 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  3. 2026-10-13 16:34 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  4. 2026-10-13 04:23 UTCEG score recompute
  5. 2026-10-13 04:23 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  6. 2026-10-12 16:34 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  7. 2026-10-12 15:52 UTCEG score recompute
  8. 2026-10-12 06:38 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  9. 2026-10-11 19:36 UTCEG score recompute
  10. 2026-10-11 16:51 UTCEG score recompute
  11. 2026-10-11 14:13 UTCEG score recompute
  12. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  13. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  14. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  15. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  16. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  17. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  18. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  19. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  20. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  21. 2026-10-02 17:56 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  22. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  23. 2026-10-01 13:24 UTCEG score recompute
  24. 2026-10-01 13:24 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  25. 2026-09-30 15:03 UTCEPSS rescoreEPSS 0.2% · 11th percentile
Show 75 more
  1. 2026-09-29 15:22 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  2. 2026-09-28 13:51 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  3. 2026-09-28 13:17 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  4. 2026-09-28 09:21 UTCEG score recompute
  5. 2026-09-28 09:21 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  6. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  7. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  8. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.2% · 11th percentile
  9. 2026-09-24 09:53 UTCEG score recompute
  10. 2026-09-24 09:53 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  11. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  12. 2026-09-23 11:42 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  13. 2026-09-23 07:48 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  14. 2026-09-23 03:56 UTCEG score recompute
  15. 2026-09-23 03:56 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  16. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  17. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  18. 2026-09-18 10:04 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  19. 2026-09-18 04:54 UTCEG score recompute
  20. 2026-09-18 04:54 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  21. 2026-09-17 19:31 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  22. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  23. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  24. 2026-09-15 03:11 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  25. 2026-09-14 11:06 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  26. 2026-09-14 07:12 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  27. 2026-09-14 03:19 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  28. 2026-09-13 23:27 UTCEG score recompute
  29. 2026-09-13 23:27 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  30. 2026-09-13 16:47 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  31. 2026-09-13 16:28 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  32. 2026-09-13 11:51 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  33. 2026-09-13 07:54 UTCEG score recompute
  34. 2026-09-13 07:54 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  35. 2026-09-12 13:18 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  36. 2026-09-12 07:28 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  37. 2026-09-12 01:46 UTCEG score recompute
  38. 2026-09-12 01:46 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  39. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  40. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  41. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  42. 2026-09-08 01:46 UTCEG score recompute
  43. 2026-09-08 01:46 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  44. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  45. 2026-09-06 17:50 UTCEG score recompute
  46. 2026-09-06 17:50 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  47. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  48. 2026-09-06 13:46 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  49. 2026-09-06 05:28 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  50. 2026-09-06 01:34 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  51. 2026-09-05 21:18 UTCEG score recompute
  52. 2026-09-05 21:18 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  53. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  54. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  55. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  56. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  57. 2026-08-31 05:42 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  58. 2026-08-31 00:05 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  59. 2026-08-30 20:13 UTCEG score recompute
  60. 2026-08-30 20:13 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  61. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  62. 2026-08-30 16:20 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  63. 2026-08-30 10:58 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  64. 2026-08-30 05:24 UTCEG score recompute
  65. 2026-08-30 05:24 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  66. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  67. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  68. 2026-08-28 02:02 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  69. 2026-08-27 21:33 UTCEG score recompute
  70. 2026-08-27 21:33 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  71. 2026-08-27 14:25 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  72. 2026-08-27 13:51 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  73. 2026-08-27 03:44 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5
  74. 2026-08-26 23:46 UTCEG score recompute
  75. 2026-08-26 23:46 UTCGHSA enrichmentGHSA-gp77-r46p-xfvc · GitHub severity HIGH · GitHub CVSS 7.5

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-59836?
CVE-2026-59836 is a critical-severity vulnerability; its CVE record was published on July 14, 2026. A improper certificate validation vulnerability in Fortinet FortiClientEMS 7.4.3 through 7.4.5, FortiClientEMS 7.4.0 through 7.4.1, FortiClientEMS 7.2 all versions may allow attacker to information disclosure via <insert attack vector here>
When was the CVE record for CVE-2026-59836 published?
The CVE record for CVE-2026-59836 was published on July 14, 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 July 15, 2026; the record at its source may have been updated since.
Is CVE-2026-59836 actively exploited?
CVE-2026-59836 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (11th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-59836?
CVE-2026-59836 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-59836?
The CVE record's solution for CVE-2026-59836, written by its CNA Fortinet, Inc., names the fix: "Upgrade to FortiClientEMS version 7.4.6 or above". The vendor advisories EchelonGraph has for CVE-2026-59836 are linked in the Vendor Advisories panel on this page.

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