CVE-2014-1776

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-01-28), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 88%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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
9.8
EG Score
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS
99.8%
KEV
⚠ Exploited

Published

April 27, 2014

Last Modified

April 21, 2026

Advisory Details (6)

Auto-updated Apr 29, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet. Sources: cert.
generic

Microsoft Security Advisory 2963983 | Microsoft Learn

https://technet.microsoft.com/library/security/2963983
generic

Microsoft Security Bulletin MS14-021 - Critical | Microsoft Learn

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-021
generic🔴 Active Exploitation

CVE-2014-1776 (IE 0day) Analysis | SignalSEC Corp.

http://www.signalsec.com/cve-2014-1776-ie-0day-analysis/
cert🔴 Active Exploitation

VU#222929 - Microsoft Internet Explorer CMarkup use-after-free vulnerability

http://www.kb.cert.org/vuls/id/222929
generic

About Secunia Research | Flexera

http://secunia.com/advisories/57908
generic

Archived MSDN and TechNet Blogs | Microsoft Learn

http://blogs.technet.com/b/srd/archive/2014/04/30/protection-strategies-for-the-security-advisory-2963983-ie-0day.aspx

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 52× in last 7d / 209× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 407 total refreshes for this CVE.

  1. 2026-07-23 01:12 UTCEG score recompute
  2. 2026-07-23 00:15 UTCEG score recompute
  3. 2026-07-22 21:53 UTCEG score recompute
  4. 2026-07-22 21:53 UTCGHSA enrichment
  5. 2026-07-22 19:40 UTCCISA KEV update
  6. 2026-07-22 17:31 UTCEG score recompute
  7. 2026-07-22 17:31 UTCGHSA enrichment
  8. 2026-07-22 14:04 UTCEPSS rescore
  9. 2026-07-22 13:28 UTCGHSA enrichment
  10. 2026-07-22 09:28 UTCGHSA enrichment
  11. 2026-07-22 05:27 UTCGHSA enrichment
  12. 2026-07-22 01:23 UTCGHSA enrichment
  13. 2026-07-21 19:52 UTCGHSA enrichment
  14. 2026-07-21 15:46 UTCGHSA enrichment
  15. 2026-07-21 14:37 UTCCISA KEV update
  16. 2026-07-21 11:46 UTCGHSA enrichment
  17. 2026-07-21 07:45 UTCGHSA enrichment
  18. 2026-07-21 03:46 UTCGHSA enrichment
  19. 2026-07-20 23:45 UTCGHSA enrichment
  20. 2026-07-20 19:46 UTCEG score recompute
  21. 2026-07-20 19:46 UTCGHSA enrichment
  22. 2026-07-20 17:03 UTCEPSS rescore
  23. 2026-07-20 17:03 UTCEPSS rescore
  24. 2026-07-20 15:45 UTCGHSA enrichment
  25. 2026-07-20 11:45 UTCGHSA enrichment
Show 75 more
  1. 2026-07-20 07:45 UTCGHSA enrichment
  2. 2026-07-20 03:44 UTCGHSA enrichment
  3. 2026-07-19 23:44 UTCGHSA enrichment
  4. 2026-07-19 19:44 UTCGHSA enrichment
  5. 2026-07-19 15:44 UTCGHSA enrichment
  6. 2026-07-19 11:44 UTCGHSA enrichment
  7. 2026-07-19 07:43 UTCGHSA enrichment
  8. 2026-07-19 03:43 UTCGHSA enrichment
  9. 2026-07-18 23:43 UTCGHSA enrichment
  10. 2026-07-18 19:43 UTCGHSA enrichment
  11. 2026-07-18 15:43 UTCGHSA enrichment
  12. 2026-07-18 11:43 UTCGHSA enrichment
  13. 2026-07-18 07:43 UTCGHSA enrichment
  14. 2026-07-18 03:43 UTCGHSA enrichment
  15. 2026-07-17 23:43 UTCGHSA enrichment
  16. 2026-07-17 19:43 UTCGHSA enrichment
  17. 2026-07-17 15:43 UTCGHSA enrichment
  18. 2026-07-17 11:43 UTCGHSA enrichment
  19. 2026-07-17 07:43 UTCEG score recompute
  20. 2026-07-17 07:43 UTCGHSA enrichment
  21. 2026-07-17 03:43 UTCGHSA enrichment
  22. 2026-07-16 23:43 UTCGHSA enrichment
  23. 2026-07-16 19:43 UTCGHSA enrichment
  24. 2026-07-16 17:04 UTCCISA KEV update
  25. 2026-07-16 15:42 UTCGHSA enrichment
  26. 2026-07-16 11:41 UTCGHSA enrichment
  27. 2026-07-16 07:42 UTCGHSA enrichment
  28. 2026-07-16 03:42 UTCGHSA enrichment
  29. 2026-07-15 23:42 UTCGHSA enrichment
  30. 2026-07-15 19:42 UTCGHSA enrichment
  31. 2026-07-15 16:54 UTCEPSS rescore
  32. 2026-07-15 16:54 UTCEPSS rescore
  33. 2026-07-15 16:49 UTCCISA KEV update
  34. 2026-07-15 15:42 UTCGHSA enrichment
  35. 2026-07-15 15:04 UTCCISA KEV update
  36. 2026-07-15 11:43 UTCGHSA enrichment
  37. 2026-07-15 07:43 UTCGHSA enrichment
  38. 2026-07-15 03:43 UTCGHSA enrichment
  39. 2026-07-14 23:43 UTCGHSA enrichment
  40. 2026-07-14 19:43 UTCGHSA enrichment
  41. 2026-07-14 18:05 UTCCISA KEV update
  42. 2026-07-14 15:43 UTCGHSA enrichment
  43. 2026-07-14 11:43 UTCGHSA enrichment
  44. 2026-07-14 07:42 UTCGHSA enrichment
  45. 2026-07-14 03:40 UTCGHSA enrichment
  46. 2026-07-13 23:41 UTCGHSA enrichment
  47. 2026-07-13 19:41 UTCGHSA enrichment
  48. 2026-07-13 17:07 UTCCISA KEV update
  49. 2026-07-13 15:41 UTCGHSA enrichment
  50. 2026-07-13 11:41 UTCGHSA enrichment
  51. 2026-07-13 07:41 UTCGHSA enrichment
  52. 2026-07-13 06:08 UTCEPSS rescore
  53. 2026-07-13 03:41 UTCGHSA enrichment
  54. 2026-07-12 23:41 UTCGHSA enrichment
  55. 2026-07-12 19:41 UTCGHSA enrichment
  56. 2026-07-12 15:41 UTCGHSA enrichment
  57. 2026-07-12 11:40 UTCGHSA enrichment
  58. 2026-07-12 07:40 UTCGHSA enrichment
  59. 2026-07-12 03:40 UTCGHSA enrichment
  60. 2026-07-11 23:40 UTCGHSA enrichment
  61. 2026-07-11 19:40 UTCGHSA enrichment
  62. 2026-07-11 15:40 UTCGHSA enrichment
  63. 2026-07-11 11:40 UTCGHSA enrichment
  64. 2026-07-11 07:40 UTCGHSA enrichment
  65. 2026-07-11 03:40 UTCGHSA enrichment
  66. 2026-07-10 23:40 UTCGHSA enrichment
  67. 2026-07-10 19:40 UTCGHSA enrichment
  68. 2026-07-10 17:52 UTCCISA KEV update
  69. 2026-07-10 15:39 UTCGHSA enrichment
  70. 2026-07-10 11:40 UTCGHSA enrichment
  71. 2026-07-10 07:36 UTCGHSA enrichment
  72. 2026-07-10 03:33 UTCGHSA enrichment
  73. 2026-07-09 23:33 UTCGHSA enrichment
  74. 2026-07-09 19:33 UTCGHSA enrichment
  75. 2026-07-09 15:32 UTCGHSA enrichment

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Frequently asked(6)

What is CVE-2014-1776?
CVE-2014-1776 is a critical vulnerability published on April 27, 2014. 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…
When was CVE-2014-1776 disclosed?
CVE-2014-1776 was first published in the National Vulnerability Database on April 27, 2014, with the most recent update on April 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2014-1776 actively exploited?
Yes. CISA added CVE-2014-1776 to the Known Exploited Vulnerabilities catalog on January 28, 2022, affecting Microsoft Internet Explorer. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2014-1776?
CVE-2014-1776 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2014-1776?
CVE-2014-1776 affects Microsoft Internet Explorer. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2014-1776?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2014-1776, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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