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CVE-2017-8739

19
FAUCET Score

CVE-2017-8739 is an information disclosure vulnerability affecting Microsoft Edge on Windows 10 version 1703, stemming from how its scripting engine manages objects in memory. This medium-severity vulnerability (CVSS 4.3) requires user interaction, typically through a malicious website, to allow an attacker to gain information that could facilitate further system compromise. While no public exploit code or Metasploit modules are available, and it's not listed in CISA's KEV catalog, the vulnerability has received some community discussion and media coverage, indicating awareness within the cybersecurity community.

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

4.3MEDIUM

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

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

Exploit Intelligence

EPSS Score
5.88%
Probability of exploitation in next 30 days
EPSS Percentile
92.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0588 is in the 97th percentile among its peer group of 26,221 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: 10724-10951
View patch
microsoftpatch availablevia msrc
Product: 10724-10952
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

Vendor Advisories (1)

microsoft2017-Sep/CVE-2017-8739Important

Scripting Engine Information Disclosure Vulnerability

Sep 12, 2017

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2017-8739
PatchVendor Advisory
securityfocus.com / bid/100761
Third Party Advisory
securitytracker.com / id/1039342
Third Party AdvisoryVDB Entry