Vulnerability record · CVE-2018-8383 · published 15 August 2018

CVE-2018-8383: Microsoft edge authentication bypass by spoofing vulnerability

Microsoft · Edge

A spoofing vulnerability exists when Microsoft Edge does not properly parse HTTP content, aka "Microsoft Edge Spoofing Vulnerability." This affects Microsoft Edge. This CVE ID is unique from CVE-2018-8388.

4.3 CVSS 3.0 Medium EPSS 6.8% · top 6.2% CWE-290 · Authentication bypass by spoofing

4.3CVSS 3.0 base score, v2 4.3

6.8%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

10References

17 Jun 2026Last modified by NVD

Description

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Edge Microsoft

References

Link	Tags
http://www.openwall.com/lists/oss-security/2019/04/11/1
http://www.securityfocus.com/bid/105024	Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1041457	Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8383	PatchVendor Advisory
https://seclists.org/bugtraq/2019/Apr/21
http://www.openwall.com/lists/oss-security/2019/04/11/1
http://www.securityfocus.com/bid/105024	Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1041457	Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8383	PatchVendor Advisory
https://seclists.org/bugtraq/2019/Apr/21

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-8383), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.