CVE-2026-12447

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-17. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
8.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.8Exploit: NoneExposed: 0

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

Heap buffer overflow in WebRTC in Google Chrome prior to 149.0.7827.155 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
44(Track)
EG Risk 44/100SSVC: 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
Severity88% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
34.8%
KEV
Not listed

Published

June 17, 2026

Last Modified

June 18, 2026

Advisory Details (2)

Auto-updated Jun 18, 2026
No patch confirmed yet.
generic

Chromium

https://issues.chromium.org/issues/513405023
generic

Chrome Releases: Stable Channel Update for Desktop

https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_01750511403.html

Vendor Advisories for CVE-2026-12447(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 8× in last 7d / 118× 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 157 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-12447?
CVE-2026-12447 is a high vulnerability published on June 17, 2026. Heap buffer overflow in WebRTC in Google Chrome prior to 149.0.7827.155 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
When was CVE-2026-12447 disclosed?
CVE-2026-12447 was first published in the National Vulnerability Database on June 17, 2026, with the most recent update on June 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12447 actively exploited?
CVE-2026-12447 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 34.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-12447?
CVE-2026-12447 has a CVSS v3.1 base score of 8.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-12447?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12447, 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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