CVE-2014-1776 kev in the critical feed json
Use-after-free vulnerability in Microsoft Internet Explorer 6 through 11 allows remote attackers to execute arbitrary code or cause a denia…
published 2014-04-27 12 y ago modified 2026-06-17 4 mo ago also EUVD-2014-1850
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Exploited
- added 2022-01-28
- epss
- 82.7%
- EPSS 82.7% chance of exploitation in 30 days, percentile 99.6%
- public exploits
- 0
- none known
Summary
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."
Patch / fix
cisa required action Apply updates per vendor instructions.
Timeline
- Published
- Added to CISA KEV
- CISA patch deadline
- CISA SSVC: exploitation active
Known exploited
- Added
- 4 y ago
- Patch by
- 2022-07-28 (4 y ago)
- Ransomware
- Not known
- Required action
- Apply updates per vendor instructions.
- Vendor, product
- Microsoft, Internet Explorer
- CISA name
- Microsoft Internet Explorer Memory Corruption Vulnerability
CISA SSVC
- Exploitation
- Active, exploited in the wild
- Automatable
- yes
- Technical impact
- total
- Assessed
- 20 mo ago
Exploit prediction
82.68% chance of exploitation in the next 30 days, higher than 99.6% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- signalsec.com http://www.signalsec.com/cve-2014-1776-ie-0day-analysis/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-416 Use After Free
References
-
docs.microsoft.com
/en-us/security-updates/securitybulletins/2014/ms14-021
vendor-advisory, patch
-
technet.microsoft.com
/library/security/2963983
mitigation, patch, vendor-advisory
-
signalsec.com
/cve-2014-1776-ie-0day-analysis/
exploit, third-party-advisory
-
securitytracker.com
/id?1030154
vdb-entry, broken-link, third-party-advisory
-
osvdb.org
/106311
vdb-entry, broken-link
-
blogs.technet.com
/b/srd/archive/2014/04/30/protection-strategies-for-the-security-advisory-2963983-ie-0day.aspx
broken-link, mitigation
-
secunia.com
/advisories/57908
third-party-advisory, broken-link
-
fireeye.com
/blog/uncategorized/2014/04/new-zero-day-exploit-targeting-internet-explorer-versions-9-through-11-identified-
broken-link
-
kb.cert.org
/vuls/id/222929
third-party-advisory, mitigation, us-government-resource
-
securityfocus.com
/bid/67075
vdb-entry, broken-link, third-party-advisory
-
vicarius.io
/vsociety/posts/cve-2014-1776-use-after-free-vulnerability-in-microsoft-internet-explorer-mitigation-scripts
third-party-advisory
-
vicarius.io
/vsociety/posts/cve-2014-1776-use-after-free-vulnerability-in-microsoft-internet-explorer-detection-script
third-party-advisory
-
cisa.gov
/known-exploited-vulnerabilities-catalog?field_cve=CVE-2014-1776
government-resource, us-government-resource
Sources
- CVE List CVE-2014-1776
- NVD CVE-2014-1776
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.