CVE-2014-4971

highpriority · attend · 47EPSS 0.230 · 98 %ileexploit · functionalEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

6 exploits · functional

Likely / severe?

23.0% (98th) EPSS

CVSS 7.2 · high

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-26

Microsoft Windows XP SP3 does not validate addresses in certain IRP handler routines, which allows local users to write data to arbitrary memory locations, and consequently gain privileges, via a crafted address in an IOCTL call, related to (1) the MQAC.sys driver in the MQ Access Control subsystem and (2) the BthPan.sys driver in the Bluetooth Personal Area Networking subsystem.

cvss

Technical severity, 0–10. One row per scoring source.

7.2

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.8–7.2

v2.07.2highAV:L/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 3.9 · impact 10

v2.07.2highAV:L/AC:L/Au:N/C:C/I:C/A:Csecondary · FSTEC (BDU) RU

v2.06.8mediumAV:L/AC:L/Au:N/C:C/I:C/A:C/E:Fsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimaryCWE-123US

exploits (6)

Public proof-of-concept and weaponised exploit code.

EDB-34167Microsoft Windows XP SP3 - 'MQAC.sys' Arbitrary Write Privilege Escalation (Metasploit)functional · exploit_db
EDB-34982Microsoft Bluetooth Personal Area Networking - 'BthPan.sys' Local Privilege Escalation (Metasploit)functional · exploit_db
EDB-34112Microsoft Windows XP SP3 - 'MQAC.sys' Arbitrary Write Privilege EscalationPoC · exploit_db
EDB-34131Microsoft Windows XP SP3 - 'BthPan.sys' Arbitrary Write Privilege EscalationPoC · exploit_db
exploit/windows/local/bthpanMS14-062 Microsoft Bluetooth Personal Area Networking (BthPan.sys) Privilege EscalationPoC · metasploit
exploit/windows/local/mqac_writeMQAC.sys Arbitrary Write Privilege EscalationPoC · metasploit

affected products (4)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
Microsoft Corp Windows Server 2003 Service Pack 2all versionsfstec_bduRU
Microsoft Corp Windows XP Service Pack 3all versionsfstec_bduRU
microsoft windows xpall versionsnvdUScpe:2.3:o:microsoft:windows_xp:*:*:*:*:*:*:*:*

also known as (8)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2014-07-26modified 2026-06-17

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+25152 more

references (40)

External citations — patches, advisories, analysis.

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