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CVE-2018-8383

20
FAUCET Score

CVE-2018-8383 is a spoofing vulnerability in Microsoft Edge that arises from improper parsing of HTTP content. This flaw could allow an attacker to display a misleading URL in the address bar, potentially tricking users into believing they are on a legitimate site. Rated as medium severity (CVSS 4.3), exploitation requires user interaction (UI:R) and has a low impact on integrity (I:L), with no confidentiality or availability impact. While there is no known active exploitation, public exploit code, or KEV listing, the vulnerability has garnered significant community discussion and media coverage, indicating awareness among security researchers.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:edge:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
6.18%
Probability of exploitation in next 30 days
EPSS Percentile
92.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0618 is in the 97th percentile among its peer group of 26,236 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: 10724-11497
View patch
microsoftpatch availablevia msrc
Product: 10724-11498
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems
View patch

Vendor Advisories (1)

microsoft2018-Aug/CVE-2018-8383Important

Microsoft Edge Spoofing Vulnerability

Aug 14, 2018

References

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