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CVE-2014-1776

CRITICAL
9.8
CVSS Score
Published: April 27, 2014 at 10:00 AM UTC
Updated: June 17, 2026 at 12:05 AM UTC
11 products affected across 1 vendorInternet ExplorerWindows Server 2012Windows Server 2008

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Severity
CRITICAL9.8
Exploitation
CISA KEV
Exploit prediction
EPSS 83%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score82.7%

EPSS (Exploit Prediction Scoring System) estimates a 82.7% chance this CVE is exploited in the wild within the next 30 days — higher than 100% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

Microsoft Internet Explorer contains a memory corruption vulnerability that allows remote attackers to execute code in the context of the current user.

Required Action
Apply updates per vendor instructions.
Ransomware Use
Unknown
Added to KEV
Jan 28, 2022
Remediation Due
Jul 28, 2022
1552 days overdue
Notes
https://learn.microsoft.com/en-us/security-updates/SecurityBulletins/2014/ms14-021?redirectedfrom=MSDN
https://nvd.nist.gov/vuln/detail/CVE-2014-1776

Description

Use-after-free vulnerability in Microsoft Internet Explorer 6 through 11 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via vectors related to the CMarkup::IsConnectedToPrimaryMarkup function, as exploited in the wild in April 2014. NOTE: this issue originally emphasized VGX.DLL, but Microsoft clarified that "VGX.DLL does not contain the vulnerable code leveraged in this exploit. Disabling VGX.DLL is an exploit-specific workaround that provides an immediate, effective workaround to help block known attacks."

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Internet Explorer· Microsoft
95%
10116789
microsoft-windows-7 (environment) · microsoft-windows-8 (environment) · microsoft-windows-8-1 (environment) · microsoft-windows-rt (environment) · microsoft-windows-rt-8-1 (environment) · microsoft-windows-server-2003 (environment) · microsoft-windows-server-2008 (environment) · microsoft-windows-server-2012 (environment) · microsoft-windows-vista (environment) · microsoft-windows-xp (environment)
Windows 7· Microsoftdevice
80%
All versions
Windows 8· Microsoftdevice
80%
All versions
Windows 8-1· Microsoftdevice
80%
All versions
Windows Rt· Microsoftdevice
80%
All versions
Windows Rt 8-1· Microsoftdevice
80%
All versions
Windows Server 2003· Microsoftdevice
80%
All versions
Windows Server 2008· Microsoftdevice
80%
All versions
Windows Server 2012· Microsoftdevice
80%
All versions
Windows Vista· Microsoftdevice
80%
All versions

References (13)

x_refsource_CONFIRMBroken LinkMitigation
Source: [email protected]
http://blogs.technet.com/b/srd/archive/2014/04/30/protection-strategies-for-the-security-advisory-2963983-ie-0day.aspx
Third Party Advisoryx_refsource_SECUNIABroken Link
Source: [email protected]
http://secunia.com/advisories/57908
VDB Entryx_refsource_SECTRACKBroken LinkThird Party Advisory
Source: [email protected]
http://securitytracker.com/id?1030154
x_refsource_MISCBroken Link
Source: [email protected]
http://www.fireeye.com/blog/uncategorized/2014/04/new-zero-day-exploit-targeting-internet-explorer-versions-9-through-11-identified-in-targeted-attacks.html
Third Party Advisoryx_refsource_CERT-VNMitigationUS Government Resource
Source: [email protected]
http://www.kb.cert.org/vuls/id/222929
VDB Entryx_refsource_OSVDBBroken Link
Source: [email protected]
http://www.osvdb.org/106311
VDB Entryx_refsource_BIDBroken LinkThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/67075
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
http://www.signalsec.com/cve-2014-1776-ie-0day-analysis/

SSVC — Action Prioritization

SSVCActiveAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

9.8CRITICALCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-416

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