CVE-2026-86860

CRITICALPre-NVD 9.39.3
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (23rd percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source
Trending — 3 sources updated this week

Also known asEUVD-2026-86403 (ENISA EUVD) · GHSA-hm4f-jpr2-fpx4 (GitHub Security Advisories)Source: ENISA EUVD

9.3EG
EchelonGraph verdictPlan mitigationNo fix is confirmed yet: check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 9.3Exploit: None knownExposed services: Not assessed

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

ServiceNow has remediated a missing authorization vulnerability that was identified in the ServiceNow AI Platform. This vulnerability could enable an unauthenticated user, in certain circumstances, to extract instance data beyond what was intended, resulting in privilege escalation.

ServiceNow deployed a security update to hosted instances and ServiceNow provided the update to our partners and self-hosted customers. We are not currently aware of malicious exploitation against ServiceNow instances. We recommend customers promptly apply appropriate updates or upgrade to a patched release if they have not already done so.

CVSS v3
9.3
EG Score
9.3CRITICALmedium confidence
EG Risk
57
EG Risk 57/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity93% × 45%
Impact severity (EG Severity): CVSS 9.3 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.3% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (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: No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high.
EPSS PROB
0.3%
EPSS %ILE
23rd
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (9.3): severity, escalated by confirmed exploitation. This CVE's 9.3 is its impact severity (EG Severity), not escalated.

EG Severity
9.3 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.3% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

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

No fix is confirmed yet. Check the vendor's advisory for a fixed release; until one is applied, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (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)3 days if the affected system is publicly exposed; 60 days if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (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

September 24, 2026

Last Modified

September 25, 2026

Advisory Details (1)

Auto-updated Oct 3, 2026
No fix on record yet.
Web page

[Security Advisory] September 2026 CVE Advisory Notification - Security - Now Support Portal

https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB3159623

Vendor Advisories for CVE-2026-86860(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 19× in last 7d / 131× 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 200 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 100 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-01 16:35 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  2. 2026-11-01 09:41 UTCEG score recompute
  3. 2026-11-01 09:41 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  4. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  5. 2026-10-31 09:45 UTCEG score recompute
  6. 2026-10-31 09:44 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  7. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  8. 2026-10-30 09:47 UTCEG score recompute
  9. 2026-10-30 09:47 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  10. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  11. 2026-10-29 09:51 UTCEG score recompute
  12. 2026-10-29 09:50 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  13. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  14. 2026-10-28 09:54 UTCEG score recompute
  15. 2026-10-28 09:54 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  16. 2026-10-27 16:32 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  17. 2026-10-27 09:05 UTCEG score recompute
  18. 2026-10-27 09:05 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  19. 2026-10-26 16:32 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  20. 2026-10-26 08:06 UTCEG score recompute
  21. 2026-10-26 08:06 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  22. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.3% · 23rd percentile
  23. 2026-10-25 13:54 UTCEG score recompute
  24. 2026-10-25 08:08 UTCEG score recompute
  25. 2026-10-25 08:08 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
Show 75 more
  1. 2026-10-24 16:34 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  2. 2026-10-24 08:11 UTCEG score recompute
  3. 2026-10-24 08:11 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  4. 2026-10-23 16:32 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  5. 2026-10-23 08:14 UTCEG score recompute
  6. 2026-10-23 08:14 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  7. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  8. 2026-10-22 08:16 UTCEG score recompute
  9. 2026-10-22 08:16 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  10. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  11. 2026-10-21 08:18 UTCEG score recompute
  12. 2026-10-21 08:17 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  13. 2026-10-20 16:33 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  14. 2026-10-20 08:20 UTCEG score recompute
  15. 2026-10-20 08:20 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  16. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  17. 2026-10-19 08:23 UTCEG score recompute
  18. 2026-10-19 08:23 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  19. 2026-10-18 08:26 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  20. 2026-10-18 03:04 UTCEG score recompute
  21. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  22. 2026-10-17 07:04 UTCEG score recompute
  23. 2026-10-17 07:04 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  24. 2026-10-16 16:44 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  25. 2026-10-16 07:05 UTCEG score recompute
  26. 2026-10-16 07:05 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  27. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  28. 2026-10-15 05:51 UTCEG score recompute
  29. 2026-10-15 05:51 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  30. 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  31. 2026-10-14 01:28 UTCEG score recompute
  32. 2026-10-14 01:28 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  33. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  34. 2026-10-12 21:39 UTCEG score recompute
  35. 2026-10-12 21:39 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  36. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  37. 2026-10-12 14:50 UTCEG score recompute
  38. 2026-10-12 01:30 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  39. 2026-10-11 20:58 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  40. 2026-10-11 19:16 UTCEG score recompute
  41. 2026-10-11 16:46 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  42. 2026-10-11 16:33 UTCEG score recompute
  43. 2026-10-11 13:50 UTCEG score recompute
  44. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  45. 2026-10-11 12:36 UTCEG score recompute
  46. 2026-10-11 12:36 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  47. 2026-10-11 08:08 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  48. 2026-10-11 03:52 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  49. 2026-10-10 23:41 UTCEG score recompute
  50. 2026-10-10 23:41 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  51. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  52. 2026-10-10 19:26 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  53. 2026-10-10 15:04 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  54. 2026-10-10 10:53 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  55. 2026-10-10 06:42 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  56. 2026-10-10 02:32 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  57. 2026-10-09 22:21 UTCEG score recompute
  58. 2026-10-09 22:21 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  59. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  60. 2026-10-09 18:09 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  61. 2026-10-09 13:55 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  62. 2026-10-09 09:43 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  63. 2026-10-09 05:31 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  64. 2026-10-09 01:20 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  65. 2026-10-08 21:10 UTCEG score recompute
  66. 2026-10-08 21:09 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  67. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  68. 2026-10-08 16:59 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  69. 2026-10-08 10:46 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  70. 2026-10-08 06:14 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  71. 2026-10-08 02:03 UTCEG score recompute
  72. 2026-10-08 02:03 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  73. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  74. 2026-10-07 21:52 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL
  75. 2026-10-07 17:42 UTCGHSA enrichmentGHSA-hm4f-jpr2-fpx4 · GitHub severity CRITICAL

Frequently asked(5)

What is CVE-2026-86860?
CVE-2026-86860 is a critical-severity vulnerability; its CVE record was published on September 24, 2026. ServiceNow has remediated a missing authorization vulnerability that was identified in the ServiceNow AI Platform. This vulnerability could enable an unauthenticated user, in certain circumstances, to extract instance data beyond what was intended, resulting in privilege escalation. ServiceNow…
When was the CVE record for CVE-2026-86860 published?
The CVE record for CVE-2026-86860 was published on September 24, 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-2026-86860 actively exploited?
CVE-2026-86860 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (23rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-86860?
CVE-2026-86860 has a CVSS base score of 9.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-86860?
No fix for CVE-2026-86860 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-2026-86860 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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