CVE-2026-45488

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreHIGH 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
5.4
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 5.4Exploit: NoneExposed: 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(high)
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
16.4%
KEV
Not listed

Published

July 3, 2026

Last Modified

July 22, 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 12× in last 7d / 54× 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. 2026-07-23 03:16 UTCEG score recompute
  2. 2026-07-22 14:08 UTCEPSS rescore
  3. 2026-07-21 15:24 UTCEPSS rescore
  4. 2026-07-20 17:08 UTCEPSS rescore
  5. 2026-07-19 03:48 UTCEG score recompute
  6. 2026-07-19 03:48 UTCVendor advisory
  7. 2026-07-19 03:48 UTCGHSA enrichment
  8. 2026-07-19 02:29 UTCEPSS rescore
  9. 2026-07-18 10:04 UTCEPSS rescore
  10. 2026-07-16 22:45 UTCVendor advisory
  11. 2026-07-16 22:45 UTCGHSA enrichment
  12. 2026-07-16 17:03 UTCEPSS rescore
  13. 2026-07-16 00:28 UTCVendor advisory
  14. 2026-07-16 00:28 UTCGHSA enrichment
  15. 2026-07-15 16:57 UTCEPSS rescore
  16. 2026-07-15 02:11 UTCGHSA enrichment
  17. 2026-07-15 02:00 UTCEPSS rescore
  18. 2026-07-14 03:49 UTCVendor advisory
  19. 2026-07-14 03:49 UTCGHSA enrichment
  20. 2026-07-13 22:30 UTCEPSS rescore
  21. 2026-07-13 06:13 UTCEPSS rescore
  22. 2026-07-13 05:32 UTCVendor advisory
  23. 2026-07-13 05:32 UTCGHSA enrichment
  24. 2026-07-12 07:15 UTCVendor advisory
  25. 2026-07-12 07:15 UTCGHSA enrichment
Show 29 more
  1. 2026-07-12 05:46 UTCEPSS rescore
  2. 2026-07-11 08:58 UTCVendor advisory
  3. 2026-07-11 08:58 UTCGHSA enrichment
  4. 2026-07-11 08:27 UTCEPSS rescore
  5. 2026-07-10 10:40 UTCVendor advisory
  6. 2026-07-10 10:39 UTCGHSA enrichment
  7. 2026-07-09 19:10 UTCEPSS rescore
  8. 2026-07-09 12:17 UTCVendor advisory
  9. 2026-07-09 12:17 UTCGHSA enrichment
  10. 2026-07-08 21:10 UTCMITRE cvelistV5CVSS v3 → 5.4
  11. 2026-07-08 15:16 UTCEPSS rescore
  12. 2026-07-08 14:00 UTCVendor advisory
  13. 2026-07-08 14:00 UTCGHSA enrichment
  14. 2026-07-07 15:42 UTCVendor advisory
  15. 2026-07-07 15:42 UTCGHSA enrichment
  16. 2026-07-07 14:17 UTCNVD updateCVSS v3 → 5.9
  17. 2026-07-07 13:46 UTCEPSS rescore
  18. 2026-07-06 17:23 UTCVendor advisory
  19. 2026-07-06 17:23 UTCGHSA enrichment
  20. 2026-07-06 16:27 UTCEPSS rescore
  21. 2026-07-06 02:23 UTCEPSS rescore
  22. 2026-07-05 19:03 UTCVendor advisory
  23. 2026-07-05 19:03 UTCGHSA enrichment
  24. 2026-07-05 02:30 UTCEPSS rescore
  25. 2026-07-04 20:46 UTCVendor advisory
  26. 2026-07-04 20:46 UTCGHSA enrichment
  27. 2026-07-03 22:29 UTCEG score recompute
  28. 2026-07-03 22:29 UTCVendor advisory
  29. 2026-07-03 22:29 UTCGHSA enrichment

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 July 22, 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 16.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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

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