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CVE-2017-8637

20
FAUCET Score

CVE-2017-8637 describes a security feature bypass vulnerability in Microsoft Edge on Windows 10 1703, allowing an attacker to bypass Arbitrary Code Guard (ACG) due to how Edge's JIT compiler accesses memory. This medium-severity vulnerability has a CVSS score of 5.3, indicating a network-based attack with high attack complexity and requiring user interaction, but could lead to high integrity impact. While no public exploit code or active exploitation is reported, its EPSS score suggests a higher-than-average exploitability likelihood compared to most CVEs, and it has received some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:microsoft:edge:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
5.01%
Probability of exploitation in next 30 days
EPSS Percentile
91.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0501 is in the 93rd percentile among its peer group of 705 CVEs.

Social Chatter

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

Media Mentions

The average CVE in this peer group has 0.2 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: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1703 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: 10724-10951
View patch
microsoftpatch availablevia msrc
Product: 10724-10952
View patch

Vendor Advisories (1)

microsoft2017-Aug/CVE-2017-8637Important

Scripting Engine Security Feature Bypass Vulnerability

Aug 8, 2017

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2017-8637
PatchVendor Advisory
securityfocus.com / bid/100045
Third Party AdvisoryVDB Entry
securitytracker.com / id/1039095
Third Party AdvisoryVDB Entry