Skip to content
Fencer Intel
critical 10.0

CVE-2014-6321 in the critical feed json

Schannel in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1…

published 11y ago modified 4mo ago also EUVD-2014-6205

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
96.0%
EPSS 96.0% chance of exploitation in 30 days, percentile 99.8%
public exploits
0
none known

Summary

Schannel in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 allows remote attackers to execute arbitrary code via crafted packets, aka "Microsoft Schannel Remote Code Execution Vulnerability."

Patch / fix

Is CVE-2014-6321 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Exploit prediction

95.99% chance of exploitation in the next 30 days, higher than 99.8% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • marc.info http://marc.info/?l=bugtraq&m=142384364031268&w=2 referenced PoC, tagged "exploit" by a source, unverified
  • blog.beyondtrust.com http://blog.beyondtrust.com/triggering-ms14-066 referenced PoC, tagged "exploit" by a source, unverified
  • securitysift.com http://www.securitysift.com/exploiting-ms14-066-cve-2014-6321-aka-winshock/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code

References

Sources

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.