User interface (ui) misrepresentation of critical information in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
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:github_m, epss, ghsa
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.
- CVSS v3
- 5.4
- EG Score
- 5.4(high)
- EPSS
- 21.6%
- KEV
- Not listed
Published
July 3, 2026
Last Modified
July 7, 2026
Advisory Details (1)
Auto-updated Jul 7, 2026Patch 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-2026-45488Vendor Advisories for CVE-2026-45488(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
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 7, 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 21.6% 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
Is Your Infrastructure Affected by CVE-2026-45488?
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