Which products and versions are affected by CVE-2014-4123?

Affected: Internet Explorer (Microsoft) versions 10, 11, 7, 8, 9. The full list is in the CVE brief.

Is CVE-2014-4123 being exploited in the wild?

It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Oct 14, 2014.

Is CVE-2014-4123 in the CISA KEV catalog?

Yes. It was added on May 25, 2022 with a federal remediation due date of Jun 15, 2022.

Is there a public exploit for CVE-2014-4123?

Public exploit code is available.

Is there a fix for CVE-2014-4123?

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

How urgently should CVE-2014-4123 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2014-4123

HighExploitedPublic exploit

Microsoft Internet Explorer 7 through 11 allows remote attackers to gain privileges via a crafted web site, aka "Internet Explorer Elevation of Privilege Vulnerability," as exploited in the wild in October 2014, a different vulnerability than CVE-2014-4124.

Published Oct 15, 2014 · Updated Apr 21, 2026

Key Facts

Patch immediately

CVE-2014-4123 is a high-severity vulnerability (CVSS 8.8 v3.1) affecting Internet Explorer (Microsoft).
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Oct 14, 2014. Public exploit code is available.
EPSS estimates a 47% 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 listed as exploited in the wild.

CVSS v3.1

8.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

47%

Higher than 98.8% of all scored CVEs

Exploited in the wild

Yes

4 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2014-4123 brief as a PDF

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

Description

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
CISA KEV	May 25, 2022	Jun 15, 2022	Not reported
Industry KEV feed	Oct 14, 2014	Jun 15, 2022	Not reported
CIRCL KEV	May 25, 2022	Jun 15, 2022	Not reported
ENISA EUVD	May 25, 2022	n/a	Not reported

Required action: Apply updates per vendor instructions.

Affected Products

5 affected entries in total

Product	Affected versions	Fixed in
Internet ExplorerMicrosoft	10, 11, 7, 8, 9	n/a

Timeline

Added to Industry KEV feed
Oct 14, 2014
Publicly disclosed
Oct 15, 2014
Added to CISA KEV
May 25, 2022
Added to CIRCL KEV
May 25, 2022
Added to ENISA EUVD
May 25, 2022
Last updated
Apr 21, 2026

References

advisoryhttp://blogs.technet.com/b/srd/archive/2014/10/14/accessing-risk-for-the-october-2014-security-updates.aspx
advisory70326
advisory1031018
patchMS14-056
exploitVulnCheck exploitation report

4 more references in the full CVE brief

FAQ

Common Questions.

Microsoft Internet Explorer 7 through 11 allows remote attackers to gain privileges via a crafted web site, aka "Internet Explorer Elevation of Privilege Vulnerability," as exploited in the wild in October 2014, a different vulnerability than CVE-2014-4124.
Affected: Internet Explorer (Microsoft) versions 10, 11, 7, 8, 9. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Oct 14, 2014.
Yes. It was added on May 25, 2022 with a federal remediation due date of Jun 15, 2022.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.

Is CVE-2014-4123 Running On Your Attack Surface?

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