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CVE-2018-8463

43
FAUCET Score

CVE-2018-8463 is an elevation of privilege vulnerability in Microsoft Edge affecting Microsoft Windows 10, allowing an attacker to escape the AppContainer sandbox. It carries a CVSS score of 7.4 (High), indicating a network-based attack requiring user interaction, with a high impact on integrity. While not actively exploited in the wild, public exploit code exists (EDB-45502), and it has garnered some community and media attention.

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

7.4HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
4.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
15.42%
Probability of exploitation in next 30 days
EPSS Percentile
96.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-45502 · Sep 27, 2018
This CVE's current EPSS score of 0.1542 is in the 97th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 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-Sep/CVE-2018-8463Important

Microsoft Edge Elevation of Privilege Vulnerability

Sep 11, 2018

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2018-8463
PatchVendor Advisory
exploit-db.com / exploits/45502
Third Party AdvisoryVDB Entry
securityfocus.com / bid/105260
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041623
Third Party AdvisoryVDB Entry