Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

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."

Published

2014-04-27T10:55:03.340

Last Modified

2025-10-22T01:15:55.443

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

10.0

Impact Score

10.0

Weaknesses

Type: Primary
CWE-416
Type: Secondary
CWE-416

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	microsoft	internet_explorer	6	Yes
Operating System	microsoft	windows_server_2003	-	No
Operating System	microsoft	windows_xp	-	No
Operating System	microsoft	windows_xp	-	No
Application	microsoft	internet_explorer	7	Yes
Operating System	microsoft	windows_server_2003	-	No
Operating System	microsoft	windows_server_2008	-	No
Operating System	microsoft	windows_vista	-	No
Operating System	microsoft	windows_xp	-	No
Operating System	microsoft	windows_xp	-	No
Application	microsoft	internet_explorer	8	Yes
Operating System	microsoft	windows_7	-	No
Operating System	microsoft	windows_server_2003	-	No
Operating System	microsoft	windows_server_2008	-	No
Operating System	microsoft	windows_server_2008	r2	No
Operating System	microsoft	windows_vista	-	No
Operating System	microsoft	windows_xp	-	No
Operating System	microsoft	windows_xp	-	No
Application	microsoft	internet_explorer	9	Yes
Operating System	microsoft	windows_7	-	No
Operating System	microsoft	windows_server_2008	-	No
Operating System	microsoft	windows_server_2008	r2	No
Operating System	microsoft	windows_vista	-	No
Application	microsoft	internet_explorer	10	Yes
Operating System	microsoft	windows_7	-	No
Operating System	microsoft	windows_8	-	No
Operating System	microsoft	windows_rt	-	No
Operating System	microsoft	windows_server_2008	r2	No
Operating System	microsoft	windows_server_2012	-	No
Application	microsoft	internet_explorer	11	Yes
Operating System	microsoft	windows_7	-	No
Operating System	microsoft	windows_8.1	-	No
Operating System	microsoft	windows_rt_8.1	-	No
Operating System	microsoft	windows_server_2008	r2	No
Operating System	microsoft	windows_server_2012	r2	No

References

http://blogs.technet.com/b/srd/archive/2014/04/30/protection-strategies-for-the-security-advisory-2963983-ie-0day.aspx Broken Link, Mitigation ([email protected])
http://secunia.com/advisories/57908 Broken Link ([email protected])
http://securitytracker.com/id?1030154 Broken Link, Third Party Advisory, VDB Entry ([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 Broken Link ([email protected])
http://www.kb.cert.org/vuls/id/222929 Mitigation, Third Party Advisory, US Government Resource ([email protected])
http://www.osvdb.org/106311 Broken Link ([email protected])
http://www.securityfocus.com/bid/67075 Broken Link, Third Party Advisory, VDB Entry ([email protected])
http://www.signalsec.com/cve-2014-1776-ie-0day-analysis/ Exploit, Third Party Advisory ([email protected])
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-021 Patch, Vendor Advisory ([email protected])
https://technet.microsoft.com/library/security/2963983 Mitigation, Patch, Vendor Advisory ([email protected])
http://blogs.technet.com/b/srd/archive/2014/04/30/protection-strategies-for-the-security-advisory-2963983-ie-0day.aspx Broken Link, Mitigation (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/57908 Broken Link (af854a3a-2127-422b-91ae-364da2661108)
http://securitytracker.com/id?1030154 Broken Link, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.fireeye.com/blog/uncategorized/2014/04/new-zero-day-exploit-targeting-internet-explorer-versions-9-through-11-identified-in-targeted-attacks.html Broken Link (af854a3a-2127-422b-91ae-364da2661108)
http://www.kb.cert.org/vuls/id/222929 Mitigation, Third Party Advisory, US Government Resource (af854a3a-2127-422b-91ae-364da2661108)
http://www.osvdb.org/106311 Broken Link (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/67075 Broken Link, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.signalsec.com/cve-2014-1776-ie-0day-analysis/ Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-021 Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://technet.microsoft.com/library/security/2963983 Mitigation, Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.vicarius.io/vsociety/posts/cve-2014-1776-use-after-free-vulnerability-in-microsoft-internet-explorer-detection-script (af854a3a-2127-422b-91ae-364da2661108)
https://www.vicarius.io/vsociety/posts/cve-2014-1776-use-after-free-vulnerability-in-microsoft-internet-explorer-mitigation-scripts (af854a3a-2127-422b-91ae-364da2661108)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2014-1776 (134c704f-9b21-4f2e-91b3-4a467353bcc0)