CVE-2026-84587

MEDIUMPre-NVD 5.55.5
EchelonGraph scoreHIGH confidence

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

Score 5.5 from GitHub Security Advisory published 2026-09-14. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: CISA-ADP (Vulnrichment) CVSS v3.1, EPSS, GitHub Security Advisory
Trending — 3 sources updated this week
5.5EG
EchelonGraph verdictMonitorRemediate within your standard update timelines (the SSVC decision on this page).
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 5.5Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

A permissions issue was addressed with additional restrictions. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to access protected user data.

CVSS v3
5.5
EG Score
5.5MEDIUMhigh confidence
EG Risk
25
EG Risk 25/100

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)
Severity55% × 45%
The EG Score, 5.5 of 10.
Exploitation0.1% × 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 every mission impact level.
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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: The CVE record names the fixed release. Apply it within your standard update timelines.
EPSS PROB
0.1%
EPSS %ILE
3rd
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at every mission impact level.

The CVE record names the fixed release. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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)60 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 partial (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 14, 2026

Last Modified

September 17, 2026

Advisory Details (3)

Auto-updated Sep 17, 2026
Fix named in the CVE record.
Web page

About the security content of macOS Sequoia 15.8 - Apple Support

https://support.apple.com/en-us/149043
Web page

About the security content of macOS Tahoe 26.7 - Apple Support

https://support.apple.com/en-us/149042
Web page

About the security content of macOS Golden Gate 27 - Apple Support

https://support.apple.com/en-us/149035

Vendor Advisories for CVE-2026-84587(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 20× in last 7d / 80× 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.

  1. 2026-10-11 19:40 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  2. 2026-10-11 19:18 UTCEG score recompute
  3. 2026-10-11 16:34 UTCEG score recompute
  4. 2026-10-11 13:52 UTCEG score recompute
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  6. 2026-10-10 19:38 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  7. 2026-10-09 21:08 UTCEG score recompute
  8. 2026-10-09 21:08 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  9. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  10. 2026-10-08 22:48 UTCEG score recompute
  11. 2026-10-08 22:48 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  12. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  13. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  14. 2026-10-07 14:36 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  15. 2026-10-06 15:57 UTCEG score recompute
  16. 2026-10-06 15:57 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  17. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  18. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  19. 2026-10-05 17:38 UTCEG score recompute
  20. 2026-10-05 17:38 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  21. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  22. 2026-10-04 19:19 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  23. 2026-10-03 20:59 UTCEG score recompute
  24. 2026-10-03 20:59 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  25. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
Show 55 more
  1. 2026-10-02 22:39 UTCEG score recompute
  2. 2026-10-02 22:39 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  3. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  4. 2026-10-02 00:17 UTCEG score recompute
  5. 2026-10-02 00:17 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  6. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  7. 2026-10-01 00:45 UTCEG score recompute
  8. 2026-10-01 00:45 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  9. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  10. 2026-09-30 01:26 UTCEG score recompute
  11. 2026-09-30 01:26 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  12. 2026-09-28 22:15 UTCEG score recompute
  13. 2026-09-28 22:15 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  14. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  15. 2026-09-27 23:52 UTCEG score recompute
  16. 2026-09-27 23:52 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  17. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  18. 2026-09-27 01:33 UTCEG score recompute
  19. 2026-09-27 01:33 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  20. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  21. 2026-09-26 03:10 UTCEG score recompute
  22. 2026-09-26 03:10 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  23. 2026-09-25 04:51 UTCEG score recompute
  24. 2026-09-25 04:51 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  25. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  26. 2026-09-24 06:31 UTCEG score recompute
  27. 2026-09-24 06:31 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  28. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  29. 2026-09-23 08:12 UTCEG score recompute
  30. 2026-09-23 08:12 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  31. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  32. 2026-09-22 09:52 UTCEG score recompute
  33. 2026-09-22 09:52 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  34. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  35. 2026-09-21 11:33 UTCEG score recompute
  36. 2026-09-21 11:33 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  37. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  38. 2026-09-20 13:14 UTCEG score recompute
  39. 2026-09-20 13:13 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  40. 2026-09-19 14:49 UTCEG score recompute
  41. 2026-09-19 14:49 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  42. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  43. 2026-09-18 16:30 UTCEG score recompute
  44. 2026-09-18 16:30 UTCGHSA enrichmentGHSA-gjph-289h-g769 · GitHub CVSS 5.5
  45. 2026-09-17 19:32 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  46. 2026-09-17 18:10 UTCGHSA enrichmentGHSA-gjph-289h-g769
  47. 2026-09-17 15:25 UTCEG score recomputeFirst assessed: 5.5 MEDIUM
  48. 2026-09-17 15:25 UTCGHSA enrichmentGHSA-gjph-289h-g769
  49. 2026-09-17 15:24 UTCMITRE cvelistV5CVSS v3 → 5.5 · severity → MEDIUM
  50. 2026-09-16 14:09 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  51. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 6th percentile
  52. 2026-09-15 14:57 UTCGHSA enrichmentGHSA-gjph-289h-g769
  53. 2026-09-14 21:22 UTCNVD update
  54. 2026-09-14 20:58 UTCEG score recompute
  55. 2026-09-14 20:54 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-84587?
CVE-2026-84587 is a medium-severity vulnerability; its CVE record was published on September 14, 2026. A permissions issue was addressed with additional restrictions. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. An app may be able to access protected user data.
When was the CVE record for CVE-2026-84587 published?
The CVE record for CVE-2026-84587 was published on September 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 September 17, 2026; the record at its source may have been updated since.
Is CVE-2026-84587 actively exploited?
CVE-2026-84587 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (3rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-84587?
CVE-2026-84587 has a CVSS v3.1 base score of 5.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-84587?
The CVE record for CVE-2026-84587 names the fix: "This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7." The vendor advisories EchelonGraph has for CVE-2026-84587 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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