What is CVE-2017-8710?

CVE-2017-8710 is a medium-severity vulnerability in Microsoft Windows 7, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 5.5/10. Published 2017-09-13.

How severe is CVE-2017-8710?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2017-8710 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XXE in Microsoft Windows 7

CVE-2017-8710

The Microsoft Common Console Document (.msc) in Microsoft Windows 7 SP1, Windows Server 2008 SP2 and R2 SP1 allows an attacker to read arbitrary files via an XML external entity (XXE) declaration, due to the way that the Microsoft Common Console Document (.msc) parses XML input containing a reference to an external entity, aka "Windows Information Disclosure Vulnerability".

Vulnerability class: XXE (XML External Entity)

Published 2017-09-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.104 (95.6th percentile), scored 2026-10-04.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.104 · newest: 0.104 · change: 0.000

Affected products

Microsoft Windows 7
Microsoft Windows Server 2008 — versions r2
Microsoft Corporation Common Console Document (.Msc) — versions Microsoft Windows 7 SP1, Windows Server 2008 SP2 and R2 SP1.

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

www.securityfocus.com/bid/100793 (VDB Entry, Third Party Advisory, vdb-entry)
www.youtube.com/watch (Exploit, Third Party Advisory)
www.vulnerability-lab.com/get_content.php (Exploit, Third Party Advisory)
www.securitytracker.com/id/1039325 (VDB Entry, Third Party Advisory, vdb-entry)
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8710 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2017-8710?: CVE-2017-8710 is a medium-severity vulnerability in Microsoft Windows 7, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 5.5/10. Published 2017-09-13.
How severe is CVE-2017-8710?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2017-8710 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.