CVE-2026-87609

CRITICALPre-NVD 9.69.6—
EchelonGraph scoreHIGH confidence

Score 9.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-09. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 4 sources updated this week
9.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 9.6Exploit: None knownExposed: 0

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

Use after free in Sharing in Google Chrome on on iOS prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code outside the sandbox via crafted network traffic. (Chromium security severity: Medium)

CVSS v3
9.6
Vendor severity
MEDIUMper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: Medium)
EG Score
9.6(high)
EG Risk
43(Track)
EG Risk 43/100SSVC: 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
Severity96% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
33%
KEV
Not listed

Published

September 9, 2026

Last Modified

September 10, 2026

Advisory Details (2)

Auto-updated Sep 14, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic

Chromium

https://issues.chromium.org/issues/547322272
generic🔴 Active Exploitation

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html

Vendor Advisories for CVE-2026-87609(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.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 82× in last 7d / 120× 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.

Showing the most recent 100 of 120 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-87609?
CVE-2026-87609 is a critical vulnerability published on September 9, 2026. Use after free in Sharing in Google Chrome on on iOS prior to 153.0.8010.36 allowed a remote attacker to execute arbitrary code outside the sandbox via crafted network traffic. (Chromium security severity: Medium)
When was CVE-2026-87609 disclosed?
CVE-2026-87609 was first published in the National Vulnerability Database on September 9, 2026, with the most recent update on September 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-87609 actively exploited?
CVE-2026-87609 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 67.0% of all scored CVEs.
What is the CVSS score of CVE-2026-87609?
CVE-2026-87609 has a CVSS v3.1 base score of 9.6 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-87609?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-87609, 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.

Dependency Blast Radius

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