CVE-2026-28849

MEDIUMPre-NVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-07-27. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

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

The issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5. A maliciously crafted ZIP archive may bypass Gatekeeper checks.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
25(Track)
EG Risk 25/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
6%
KEV
Not listed

Published

July 27, 2026

Last Modified

August 25, 2026

Advisory Details (2)

Auto-updated Jul 28, 2026
No patch confirmed yet.
generic

About the security content of macOS Sonoma 14.8.8 - Apple Support

https://support.apple.com/en-us/128072
generic

About the security content of macOS Sequoia 15.7.8 - Apple Support

https://support.apple.com/en-us/128071

Vendor Advisories for CVE-2026-28849(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 18× in last 7d / 80× 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 150 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-28849?
CVE-2026-28849 is a medium vulnerability published on July 27, 2026. The issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5. A maliciously crafted ZIP archive may bypass Gatekeeper checks.
When was CVE-2026-28849 disclosed?
CVE-2026-28849 was first published in the National Vulnerability Database on July 27, 2026, with the most recent update on August 25, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-28849 actively exploited?
CVE-2026-28849 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 93.7% of all scored CVEs.
What is the CVSS score of CVE-2026-28849?
CVE-2026-28849 has a CVSS v3.1 base score of 5.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-28849?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-28849, 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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