CVE-2026-64779

LOWPre-NVD 3.13.1—
EchelonGraph scoreMEDIUM confidence

Score 3.1 from GitHub Security Advisory (severity: LOW) published 2026-08-18. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 3.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — Patch released this week
3.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 3.1Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A memory corruption vulnerability was addressed with improved locking. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, visionOS 27. Processing maliciously crafted web content may lead to an unexpected Safari crash.

CVSS v3
3.1
EG Score
3.1LOWmedium confidence
EG Risk
14
EG Risk 14/100CISA SSVC

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
Severity31% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
29th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 17, 2026

Last Modified

September 14, 2026

References (5)

Vendor Advisories for CVE-2026-64779(3)

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

Patch Availability(2)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatwebkit2gtk3-0:2.54.0-1.el8_102026-09-30redhat
redhatwebkit2gtk3-0:2.54.0-1.el9_82026-09-21redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(6 across 3 ecosystems)
Debian:12(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk2.40.1-1 ... 2.54.0-1~exp1 (168 versions)
  • every version on: no fix on record
—
wpewebkit2.38.6-1 ... 2.54.0-2 (56 versions)
  • every version on: no fix on record
—
Debian:13(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk2.48.3-1 ... 2.53.92-1 (59 versions)
  • every version up to 2.54.0-1~deb13u1: fixed in 2.54.0-1~deb13u1
—
wpewebkit2.48.3-1 ... 2.54.0-2 (22 versions)
  • every version on: no fix on record
—
Debian:14(2)
PackageVulnerable rangeFix by version rangeDependents
webkit2gtk2.48.3-1 ... 2.54.0-1~exp1 (61 versions)
  • every version on: no fix on record
—
wpewebkit2.48.3-1 ... 2.52.6-1 (20 versions)
  • every version up to 2.54.0-1: fixed in 2.54.0-1
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× 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. 2026-10-04 23:22 UTCEPSS rescore
  2. 2026-10-04 03:21 UTCEG score recompute
  3. 2026-10-04 03:21 UTCVendor advisory
  4. 2026-10-04 03:21 UTCGHSA enrichment
  5. 2026-10-03 14:26 UTCEPSS rescore
  6. 2026-10-02 17:56 UTCEPSS rescore
  7. 2026-10-01 19:50 UTCEPSS rescore
  8. 2026-09-30 22:35 UTCEG score recompute
  9. 2026-09-30 22:35 UTCVendor advisory
  10. 2026-09-30 22:35 UTCGHSA enrichment
  11. 2026-09-30 15:03 UTCEPSS rescore
  12. 2026-09-28 13:51 UTCEPSS rescore
  13. 2026-09-27 17:47 UTCEG score recompute
  14. 2026-09-27 17:47 UTCVendor advisory
  15. 2026-09-27 17:47 UTCGHSA enrichment
  16. 2026-09-26 15:59 UTCEPSS rescore
  17. 2026-09-24 13:01 UTCEG score recompute
  18. 2026-09-24 13:01 UTCVendor advisory
  19. 2026-09-24 13:00 UTCGHSA enrichment
  20. 2026-09-23 17:54 UTCEPSS rescore
  21. 2026-09-21 08:14 UTCEG score recompute
  22. 2026-09-21 08:14 UTCGHSA enrichment
  23. 2026-09-20 20:16 UTCEPSS rescore
  24. 2026-09-18 19:28 UTCEPSS rescore
  25. 2026-09-18 02:20 UTCEG score recompute
Show 54 more
  1. 2026-09-18 02:20 UTCGHSA enrichment
  2. 2026-09-16 14:08 UTCEPSS rescore
  3. 2026-09-16 05:15 UTCEPSS rescore
  4. 2026-09-14 21:33 UTCGHSA enrichment
  5. 2026-09-14 21:09 UTCEG score recompute
  6. 2026-09-14 21:09 UTCGHSA enrichment
  7. 2026-09-13 10:14 UTCEG score recompute
  8. 2026-09-13 10:14 UTCGHSA enrichment
  9. 2026-09-11 14:53 UTCEPSS rescore
  10. 2026-09-11 09:37 UTCEPSS rescore
  11. 2026-09-10 05:27 UTCEG score recompute
  12. 2026-09-10 05:27 UTCGHSA enrichment
  13. 2026-09-08 22:01 UTCEPSS rescore
  14. 2026-09-07 16:01 UTCEPSS rescore
  15. 2026-09-07 00:40 UTCEG score recompute
  16. 2026-09-07 00:40 UTCGHSA enrichment
  17. 2026-09-06 13:47 UTCEPSS rescore
  18. 2026-09-05 15:31 UTCEPSS rescore
  19. 2026-09-04 05:07 UTCEPSS rescore
  20. 2026-09-03 19:52 UTCEG score recompute
  21. 2026-09-03 19:52 UTCGHSA enrichment
  22. 2026-09-02 14:12 UTCEPSS rescore
  23. 2026-09-01 13:54 UTCEPSS rescore
  24. 2026-09-01 04:40 UTCEPSS rescore
  25. 2026-08-31 15:05 UTCEG score recompute
  26. 2026-08-31 15:05 UTCGHSA enrichment
  27. 2026-08-30 19:17 UTCEPSS rescore
  28. 2026-08-30 01:22 UTCEPSS rescore
  29. 2026-08-28 21:42 UTCEPSS rescore
  30. 2026-08-28 09:51 UTCEG score recompute
  31. 2026-08-28 09:50 UTCGHSA enrichment
  32. 2026-08-26 14:47 UTCEPSS rescore
  33. 2026-08-25 13:49 UTCEPSS rescore
  34. 2026-08-25 04:37 UTCEG score recompute
  35. 2026-08-25 04:37 UTCGHSA enrichment
  36. 2026-08-21 23:51 UTCEG score recompute
  37. 2026-08-21 23:51 UTCGHSA enrichment
  38. 2026-08-21 23:49 UTCEPSS rescore
  39. 2026-08-20 22:55 UTCEPSS rescore
  40. 2026-08-19 17:04 UTCEPSS rescore
  41. 2026-08-18 19:04 UTCGHSA enrichment
  42. 2026-08-18 18:25 UTCGHSA enrichment
  43. 2026-08-18 18:09 UTCEG score recompute
  44. 2026-08-18 18:09 UTCGHSA enrichment
  45. 2026-08-18 14:55 UTCGHSA enrichment
  46. 2026-08-18 14:50 UTCEG score recompute
  47. 2026-08-18 14:50 UTCGHSA enrichment
  48. 2026-08-18 13:48 UTCEPSS rescore
  49. 2026-08-18 13:27 UTCEG score recompute▲ 3.10
  50. 2026-08-18 13:27 UTCGHSA enrichment
  51. 2026-08-18 13:27 UTCMITRE cvelistV5CVSS v3 → 3.1 · severity → LOW
  52. 2026-08-17 22:20 UTCNVD update
  53. 2026-08-17 21:40 UTCEG score recompute
  54. 2026-08-17 21:39 UTCMITRE cvelistV5first tracked

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-64779?
CVE-2026-64779 is a low vulnerability published on August 17, 2026. A memory corruption vulnerability was addressed with improved locking. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, visionOS 27. Processing maliciously crafted web content may lead to an unexpected Safari crash.
When was CVE-2026-64779 disclosed?
CVE-2026-64779 was first published on August 17, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64779 actively exploited?
CVE-2026-64779 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (29th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-64779?
CVE-2026-64779 has a CVSS v3.1 base score of 3.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-64779?
A fix for CVE-2026-64779 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-64779 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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