CVE-2026-87564

MEDIUMNVD 4.34.3—
EchelonGraph scoreHIGH confidence

Score 4.3 from GitHub Security Advisory published 2026-09-09. NVD baseline CVSS 4.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
4.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 4.3Exploit: None knownExposed: 0

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

Type confusion in V8 in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to read memory inside the sandbox via a crafted HTML page. (Chromium security severity: High)

CVSS v3
4.3
Vendor severity
HIGHper Google (Chromium)Vendor's own band, not a CVSS rating — advisory text: (Chromium security severity: High)
EG Score
4.3(high)
EG Risk
19(Track)
EG Risk 19/100SSVC: 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
Severity43% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
19%
KEV
Not listed

Published

September 9, 2026

Last Modified

September 17, 2026

Advisory Details (2)

Auto-updated Sep 9, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic

Chromium

https://issues.chromium.org/issues/552342545
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-2026-87564(2)

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 26× in last 7d / 43× 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.

  1. 2026-09-18 20:13 UTCEG score recompute
  2. 2026-09-18 20:13 UTCVendor advisory
  3. 2026-09-18 20:13 UTCGHSA enrichment
  4. 2026-09-18 19:28 UTCEPSS rescore
  5. 2026-09-17 19:32 UTCEPSS rescore
  6. 2026-09-17 18:12 UTCVendor advisory
  7. 2026-09-17 18:12 UTCGHSA enrichment
  8. 2026-09-17 10:57 UTCEG score recompute
  9. 2026-09-17 10:57 UTCVendor advisory
  10. 2026-09-17 10:57 UTCGHSA enrichment
  11. 2026-09-16 14:09 UTCEPSS rescore
  12. 2026-09-16 08:56 UTCEG score recompute
  13. 2026-09-16 08:56 UTCVendor advisory
  14. 2026-09-16 08:56 UTCGHSA enrichment
  15. 2026-09-16 05:15 UTCEPSS rescore
  16. 2026-09-15 06:51 UTCEG score recompute
  17. 2026-09-15 06:51 UTCVendor advisory
  18. 2026-09-15 06:51 UTCGHSA enrichment
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-14 04:50 UTCEG score recompute
  22. 2026-09-14 04:50 UTCVendor advisory
  23. 2026-09-14 04:50 UTCGHSA enrichment
  24. 2026-09-13 02:50 UTCEG score recompute
  25. 2026-09-13 02:50 UTCVendor advisory
Show 18 more
  1. 2026-09-13 02:50 UTCGHSA enrichment
  2. 2026-09-12 00:49 UTCEG score recompute
  3. 2026-09-12 00:49 UTCVendor advisory
  4. 2026-09-12 00:49 UTCGHSA enrichment
  5. 2026-09-11 14:53 UTCEPSS rescore
  6. 2026-09-11 14:53 UTCEPSS rescore
  7. 2026-09-10 22:48 UTCEG score recompute
  8. 2026-09-10 22:48 UTCGHSA enrichment
  9. 2026-09-09 20:48 UTCEG score recompute
  10. 2026-09-09 20:48 UTCGHSA enrichment
  11. 2026-09-09 20:12 UTCEG score recompute▼ 4.50
  12. 2026-09-09 20:12 UTCGHSA enrichment
  13. 2026-09-09 20:10 UTCMITRE cvelistV5CVSS v3 → 4.3 · severity → MEDIUM
  14. 2026-09-09 15:59 UTCGHSA enrichment
  15. 2026-09-09 13:43 UTCGHSA enrichment
  16. 2026-09-09 01:22 UTCNVD update
  17. 2026-09-09 01:03 UTCEG score recompute
  18. 2026-09-09 00:57 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-87564?
CVE-2026-87564 is a medium vulnerability published on September 9, 2026. Type confusion in V8 in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to read memory inside the sandbox via a crafted HTML page. (Chromium security severity: High)
When was CVE-2026-87564 disclosed?
CVE-2026-87564 was first published in the National Vulnerability Database on September 9, 2026, with the most recent update on September 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-87564 actively exploited?
CVE-2026-87564 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 81.2% of all scored CVEs.
What is the CVSS score of CVE-2026-87564?
CVE-2026-87564 has a CVSS v3 base score of 4.3 (NVD).
How do I remediate CVE-2026-87564?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-87564, 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

Explore the affected products and dependency analysis for CVE-2026-87564

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