CVE-2018-8388

MEDIUMNVD 4.3

4.3

A spoofing vulnerability exists when Microsoft Edge improperly handles specific HTML content, aka "Microsoft Edge Spoofing Vulnerability." This affects Microsoft Edge. This CVE ID is unique from CVE-2018-8383.

CVSS v3: 4.3
EG Score: —
EPSS: 85.3%
KEV: Not listed

Published

August 15, 2018

Last Modified

November 21, 2024

References (6)

secure@microsofthttp://www.securityfocus.com/bid/105025
secure@microsofthttp://www.securitytracker.com/id/1041457
secure@microsofthttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8388
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/105025
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1041457
af854a3a-2127-422b-91ae-364da2661108https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8388

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-290Authentication Bypass by Spoofing

Data Freshness Timeline

(refreshed 5× in last 7d / 5× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2018-8388?

CVE-2018-8388 is a medium vulnerability published on August 15, 2018. A spoofing vulnerability exists when Microsoft Edge improperly handles specific HTML content, aka "Microsoft Edge Spoofing Vulnerability." This affects Microsoft Edge. This CVE ID is unique from CVE-2018-8383.

When was CVE-2018-8388 disclosed?

CVE-2018-8388 was first published in the National Vulnerability Database on August 15, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-8388 actively exploited?

CVE-2018-8388 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 85.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-8388?

CVE-2018-8388 has a CVSS v3 base score of 4.3 (NVD).

How do I remediate CVE-2018-8388?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-8388, 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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CVE-2018-8388

📅 Published

🔄 Last Modified

🔗 References (6)