ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2014-1776

Microsoft Internet Explorer Memory Corruption Vulnerability

Published Apr 27, 2014 · catalog updated Jun 16, 2026 · Microsoft Internet Explorer

Patch now

CVE-2014-1776 is in the CISA known-exploited catalog, due Jul 28, 2022. Confirm Microsoft Internet Explorer against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Critical9.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
82.68%
Remediation
Remediation guidance
Affected products
cpe microsoft/internet explorer · vendor Microsoft Internet Explorer · vendor n/a n/a

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."

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/internet explorer10
  • cpe microsoft/internet explorer11
  • cpe microsoft/internet explorer6
  • cpe microsoft/internet explorer7
  • cpe microsoft/internet explorer8
  • cpe microsoft/internet explorer9
  • vendor Microsoft Internet Explorerversion unspecified
  • vendor n/a n/aversion unspecified

How to fix CVE-2014-1776

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2014-1776 is in the CISA known-exploited catalog, due Jul 28, 2022. Confirm Microsoft Internet Explorer against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with microsoft/internet explorer 10; microsoft/internet explorer 11; microsoft/internet explorer 6; microsoft/internet explorer 7. Apply updates per vendor instructions.

What should an analyst verify?

CWE-416: Use After Free. EPSS 82.68%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 27, 2014 · Catalog

    Detected

    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 vulnerab

  2. Jan 28, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Jul 28, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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 vulnerab

Sources

  • CISA KEVConfirmed exploitationCVE-2014-1776

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

    cisa.gov
  • CVE.orgVulnerability recordCVE-2014-1776

    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 2

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2014-1776

    30-day exploitation probability 82.7%

    first.org
  • NIST NVDVulnerability recordCVE-2014-1776

    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 2

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2014-1776

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

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.