CVE-2026-12293

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-16. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.8Exploit: NoneExposed: 0

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

Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

CVSS v3
9.8
EG Score
9.8(medium)
EPSS
22.4%
KEV
Not listed

Published

June 16, 2026

Last Modified

July 15, 2026

Advisory Details (6)

Auto-updated Jul 16, 2026
Patch available. Sources: redhat.
redhat

Affected: Red Hat Enterprise Linux 10",

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12293.json
redhat

2489216 – (CVE-2026-12293) CVE-2026-12293 firefox: thunderbird: Use-after-free in the Graphics: WebGPU component

https://bugzilla.redhat.com/show_bug.cgi?id=2489216
redhat Patch Available

cve-details

https://access.redhat.com/security/cve/CVE-2026-12293
generic

Security Vulnerabilities fixed in Thunderbird 152 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-60/
generic

Security Vulnerabilities fixed in Firefox 152 — Mozilla

https://www.mozilla.org/security/advisories/mfsa2026-57/
generic

Access Denied

https://bugzilla.mozilla.org/show_bug.cgi?id=2039568

Vendor Advisories for CVE-2026-12293(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 156× 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 191 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-12293?
CVE-2026-12293 is a critical vulnerability published on June 16, 2026. Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
When was CVE-2026-12293 disclosed?
CVE-2026-12293 was first published in the National Vulnerability Database on June 16, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-12293 actively exploited?
CVE-2026-12293 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 22.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-12293?
CVE-2026-12293 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2026-12293?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-12293, 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-2026-12293

Explore →

Is Your Infrastructure Affected by CVE-2026-12293?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs