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CVE-2014-1776Microsoft Internet Explorer Memory Corruption Vulnerability
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."
9.8 CRITICALEPSS 82.68%⚡ Known Exploited (CISA KEV)NVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 9.8 | CRITICAL | 3.1CISA-ADP | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 10.0 | HIGH | 2.0NVD | AV:N/AC:L/Au:N/C:C/I:C/A:C |
CISA required action
⚡ Known exploited · remediation due Jul 28, 2022
Apply updates per vendor instructions.
Details
- CVE ID
- CVE-2014-1776
- Status
- Analyzed
- Assigner (CNA)
- microsoft
- Published
- Apr 27, 2014
- Last modified
- 2026-06-17 00:05 UTC
- Weaknesses
Affected Products
From NVD CPE configurations.
microsoftinternet explorer6 version ranges
- 6
- 7
- 8
- 9
- 10
- 11
References
- blogs.technet.com http://blogs.technet.com/b/srd/archive/2014/04/30/protection-strategies-for-the-security-advisory-2963983-ie-0day.aspx
- secunia.com http://secunia.com/advisories/57908
- securitytracker.com http://securitytracker.com/id?1030154
- fireeye.com http://www.fireeye.com/blog/uncategorized/2014/04/new-zero-day-exploit-targeting-internet-explorer-versions-9-through-11-identified-in-targeted-attacks.html
- kb.cert.org http://www.kb.cert.org/vuls/id/222929
- osvdb.org http://www.osvdb.org/106311
- securityfocus.com http://www.securityfocus.com/bid/67075
- signalsec.com http://www.signalsec.com/cve-2014-1776-ie-0day-analysis/
- docs.microsoft.com https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-021
- technet.microsoft.com https://technet.microsoft.com/library/security/2963983
- vicarius.io https://www.vicarius.io/vsociety/posts/cve-2014-1776-use-after-free-vulnerability-in-microsoft-internet-explorer-detection-script
- vicarius.io https://www.vicarius.io/vsociety/posts/cve-2014-1776-use-after-free-vulnerability-in-microsoft-internet-explorer-mitigation-scripts
- cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2014-1776