CVE-2026-45488

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreMEDIUM confidence

Score 5.4 from GitHub Security Advisory published 2026-07-03. the CNA's CVSS baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
Trending — 4 sources updated this week
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: None knownExposed: 0

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

User interface (ui) misrepresentation of critical information in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.

CVSS v3
5.4
EG Score
5.4(medium)
EG Risk
24(Track)
EG Risk 24/100SSVC: 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
Severity54% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
30%
KEV
Not listed

Published

July 3, 2026

Last Modified

September 9, 2026

Advisory Details (1)

Auto-updated Jul 7, 2026
Patch available. Sources: microsoft.
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45488

Vendor Advisories for CVE-2026-45488(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 16× in last 7d / 98× 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 237 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-45488?
CVE-2026-45488 is a medium vulnerability published on July 3, 2026. User interface (ui) misrepresentation of critical information in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
When was CVE-2026-45488 disclosed?
CVE-2026-45488 was first published in the National Vulnerability Database on July 3, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45488 actively exploited?
CVE-2026-45488 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 70.4% of all scored CVEs.
What is the CVSS score of CVE-2026-45488?
CVE-2026-45488 has a CVSS v4.0 base score of 5.4 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-45488?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45488, 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-2026-45488

Explore →

Is Your Infrastructure Affected by CVE-2026-45488?

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

Start Free Scan →Browse All CVEs