Which products and versions are affected by CVE-2017-8594?

Affected: Internet Explorer (Microsoft) versions 11; Windows 8.1 and Windows RT 8.1, and Windows Server 2012 R2 versions >= Internet Explorer. The full list is in the CVE brief.

Is CVE-2017-8594 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2017-8594 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2017-8594?

Public exploit code is available.

Is there a fix for CVE-2017-8594?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2017-8594 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2017-8594

HighPublic exploit

Internet Explorer on Microsoft Windows 8.1 and Windows RT 8.1, and Windows Server 2012 R2 allows an attacker to execute arbitrary code in the context of the current user when Internet Explorer improperly accesses objects in memory, aka "Internet Explorer Memory Corruption…

Published Jul 11, 2017 · Updated May 12, 2026

Key Facts

Patch immediately

CVE-2017-8594 is a high-severity vulnerability (CVSS 7.5 v3) affecting Internet Explorer (Microsoft), Windows 8.1 and Windows RT 8.1, and Windows Server 2012 R2.
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 50% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3

7.5

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

EPSS (30-day exploit likelihood)

50%

Higher than 98.9% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2017-8594 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Affected Products

2 affected entries in total

Product	Affected versions	Fixed in
Internet ExplorerMicrosoft	11	n/a
Windows 8.1 and Windows RT 8.1, and Windows Server 2012 R2	>= Internet Explorer	n/a

Timeline

Publicly disclosed
Jul 11, 2017
Last updated
May 12, 2026

Weakness Type

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

advisory99401
patchhttps://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2017-8594
exploitExploitDB-42336
exploit42336

FAQ

Common Questions.

Internet Explorer on Microsoft Windows 8.1 and Windows RT 8.1, and Windows Server 2012 R2 allows an attacker to execute arbitrary code in the context of the current user when Internet Explorer improperly accesses objects in memory, aka "Internet Explorer Memory Corruption Vulnerability".
Affected: Internet Explorer (Microsoft) versions 11; Windows 8.1 and Windows RT 8.1, and Windows Server 2012 R2 versions >= Internet Explorer. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2017-8594 Running On Your Attack Surface?

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