CVE-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 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."

CVSS v3.1

9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS

88.01% chance of exploitation in the next 30 days, 100th percentile

CISA KEV

added 2022-01-28

Published

2014-04-27

Updated

2025-10-22

Proof-of-concept exploits (3)

• http://www.signalsec.com/cve-2014-1776-ie-0day-analysis/
• http://www.fireeye.com/blog/uncategorized/2014/04/new-zero-day-exploit-targeting-internet…
• zha0/Maltego1★ · 2014-05-13

References

• CVE Record
• NVD entry

Related

• CVE-2021-1675
• CVE-2023-36407
• CVE-2014-1775
• CVE-2014-1777
• CVE-2014-1774
• CVE-2014-1778