CVE-2026-28849

MEDIUMPre-NVD 5.55.5—
EchelonGraph scoreHIGH 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(high)
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
4%
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 22× in last 7d / 89× 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. 2026-08-25 20:37 UTCGHSA enrichment
  2. 2026-08-25 19:37 UTCGHSA enrichment
  3. 2026-08-25 18:47 UTCEG score recompute
  4. 2026-08-25 18:47 UTCGHSA enrichment
  5. 2026-08-25 13:49 UTCEPSS rescore
  6. 2026-08-24 19:39 UTCEG score recompute
  7. 2026-08-24 19:39 UTCGHSA enrichment
  8. 2026-08-24 14:17 UTCEPSS rescore
  9. 2026-08-23 20:31 UTCEG score recompute
  10. 2026-08-23 20:31 UTCGHSA enrichment
  11. 2026-08-23 00:19 UTCEPSS rescore
  12. 2026-08-22 21:23 UTCEG score recompute
  13. 2026-08-22 21:23 UTCGHSA enrichment
  14. 2026-08-21 23:49 UTCEPSS rescore
  15. 2026-08-21 22:14 UTCGHSA enrichment
  16. 2026-08-20 22:55 UTCEG score recompute
  17. 2026-08-20 22:55 UTCGHSA enrichment
  18. 2026-08-20 22:55 UTCEPSS rescore
  19. 2026-08-20 22:55 UTCEPSS rescore
  20. 2026-08-19 23:47 UTCEG score recompute
  21. 2026-08-19 23:47 UTCGHSA enrichment
  22. 2026-08-19 17:03 UTCEPSS rescore
  23. 2026-08-19 00:38 UTCGHSA enrichment
  24. 2026-08-18 01:24 UTCEG score recompute
  25. 2026-08-18 01:24 UTCGHSA enrichment
Show 64 more
  1. 2026-08-17 13:47 UTCEPSS rescore
  2. 2026-08-17 01:20 UTCEG score recompute
  3. 2026-08-17 01:20 UTCGHSA enrichment
  4. 2026-08-16 14:56 UTCEPSS rescore
  5. 2026-08-16 02:14 UTCEPSS rescore
  6. 2026-08-16 02:12 UTCGHSA enrichment
  7. 2026-08-15 03:04 UTCEG score recompute
  8. 2026-08-15 03:04 UTCGHSA enrichment
  9. 2026-08-15 01:30 UTCEPSS rescore
  10. 2026-08-14 03:55 UTCEG score recompute
  11. 2026-08-14 03:55 UTCGHSA enrichment
  12. 2026-08-13 22:00 UTCEPSS rescore
  13. 2026-08-13 04:47 UTCEG score recompute
  14. 2026-08-13 04:47 UTCGHSA enrichment
  15. 2026-08-12 13:50 UTCEPSS rescore
  16. 2026-08-12 05:39 UTCEG score recompute
  17. 2026-08-12 05:39 UTCGHSA enrichment
  18. 2026-08-11 13:42 UTCEPSS rescore
  19. 2026-08-11 06:30 UTCGHSA enrichment
  20. 2026-08-10 07:22 UTCEG score recompute
  21. 2026-08-10 07:22 UTCGHSA enrichment
  22. 2026-08-09 13:46 UTCEPSS rescore
  23. 2026-08-09 08:13 UTCEG score recompute
  24. 2026-08-09 08:13 UTCGHSA enrichment
  25. 2026-08-08 16:37 UTCEPSS rescore
  26. 2026-08-08 09:05 UTCEG score recompute
  27. 2026-08-08 09:05 UTCGHSA enrichment
  28. 2026-08-07 09:57 UTCEG score recompute
  29. 2026-08-07 09:57 UTCGHSA enrichment
  30. 2026-08-06 13:46 UTCEPSS rescore
  31. 2026-08-06 10:49 UTCEG score recompute
  32. 2026-08-06 10:49 UTCGHSA enrichment
  33. 2026-08-05 19:17 UTCEPSS rescore
  34. 2026-08-05 11:41 UTCEG score recompute
  35. 2026-08-05 11:41 UTCGHSA enrichment
  36. 2026-08-04 15:10 UTCEPSS rescore
  37. 2026-08-04 12:33 UTCEG score recompute
  38. 2026-08-04 12:33 UTCGHSA enrichment
  39. 2026-08-03 12:17 UTCEG score recompute
  40. 2026-08-03 12:16 UTCGHSA enrichment
  41. 2026-08-03 10:36 UTCEPSS rescore
  42. 2026-08-02 13:08 UTCEG score recompute
  43. 2026-08-02 13:08 UTCGHSA enrichment
  44. 2026-08-02 02:26 UTCEPSS rescore
  45. 2026-08-01 14:00 UTCEG score recompute
  46. 2026-08-01 14:00 UTCGHSA enrichment
  47. 2026-08-01 04:16 UTCEPSS rescore
  48. 2026-07-31 14:51 UTCEG score recompute
  49. 2026-07-31 14:51 UTCGHSA enrichment
  50. 2026-07-30 16:27 UTCEPSS rescore
  51. 2026-07-30 15:43 UTCEG score recompute
  52. 2026-07-30 15:43 UTCGHSA enrichment
  53. 2026-07-30 01:30 UTCEPSS rescore
  54. 2026-07-29 16:03 UTCGHSA enrichment
  55. 2026-07-29 15:37 UTCEG score recompute
  56. 2026-07-29 15:37 UTCGHSA enrichment
  57. 2026-07-28 16:28 UTCGHSA enrichment
  58. 2026-07-28 16:14 UTCEG score recompute▲ 5.50
  59. 2026-07-28 16:14 UTCGHSA enrichment
  60. 2026-07-28 16:13 UTCMITRE cvelistV5CVSS v3 → 5.5 · severity → MEDIUM
  61. 2026-07-28 15:36 UTCEPSS rescore
  62. 2026-07-27 21:19 UTCNVD update
  63. 2026-07-27 20:26 UTCEG score recompute
  64. 2026-07-27 20:24 UTCMITRE cvelistV5first tracked

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 95.8% 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

Explore the affected products and dependency analysis for CVE-2026-28849

Explore →

Is Your Infrastructure Affected by CVE-2026-28849?

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

Start Free Scan →Browse All CVEs