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Fencer Vulns
critical 10.0

CVE-2006-2373 in the critical feed json

The Server Message Block (SMB) driver (MRXSMB.SYS) in Microsoft Windows 2000 SP4, XP SP1 and SP2, and Server 2003 SP1 and earlier allows lo…

published 2006-06-13 20 y ago modified 2026-06-16 4 mo ago also EUVD-2006-2374

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
29.2%
EPSS 29.2% chance of exploitation in 30 days, percentile 98%
public exploits
2
Exploit-DB

Summary

The Server Message Block (SMB) driver (MRXSMB.SYS) in Microsoft Windows 2000 SP4, XP SP1 and SP2, and Server 2003 SP1 and earlier allows local users to execute arbitrary code by calling the MrxSmbCscIoctlOpenForCopyChunk function with the METHOD_NEITHER method flag and an arbitrary address, possibly for kernel memory, aka the "SMB Driver Elevation of Privilege Vulnerability."

Patch / fix

Timeline

  1. Published
  2. First public exploit (EDB-1911)

Exploit prediction

29.17% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-1911 Microsoft Windows XP/2000 - 'Mrxsmb.sys' Local Privilege Escalation (MS06-030) local, 2006-06-14
  • EDB-1910 Microsoft Windows - NtClose DeadLock (MS06-030) local, 2006-06-14

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-264 Permissions, Privileges, and Access Controls

References

Sources

Fencer Vulns 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.