Which products and versions are affected by CVE-2011-0654?

Affected: Windows 2003 Server (Microsoft); Windows Server 2003 (Microsoft). The full list is in the CVE brief.

Is CVE-2011-0654 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2011-0654 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2011-0654?

Public exploit code is available.

Is there a fix for CVE-2011-0654?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2011-0654 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2011-0654

CriticalPublic exploit

Published Feb 15, 2011 · Updated Apr 28, 2026

Key Facts

Patch immediately

CVE-2011-0654 is a critical-severity vulnerability (CVSS 10.0 v2) affecting Windows 2003 Server (Microsoft), Windows Server 2003 (Microsoft).
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 68% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v2

10.0

AV:N/AC:L/Au:N/C:C/I:C/A:C

EPSS (30-day exploit likelihood)

68%

Higher than 99.3% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2011-0654 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Integer underflow in the BowserWriteErrorLogEntry function in the Common Internet File System (CIFS) browser service in Mrxsmb.sys or bowser.sys in Active Directory in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows remote attackers to execute arbitrary code or cause a denial of service (system crash) via a malformed BROWSER ELECTION message, leading to a heap-based buffer overflow, aka "Browser Pool Corruption Vulnerability." NOTE: some of these details are obtained from third party information.

Affected Products

6 affected entries in total

Product	Affected versions	Fixed in
Windows 2003 ServerMicrosoft	See advisory	n/a
Windows Server 2003Microsoft	See advisory	n/a

Timeline

Publicly disclosed
Feb 15, 2011
Last updated
Apr 28, 2026

Weakness Type

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer

References

advisory43299
advisoryADV-2011-0394
advisoryADV-2011-0938
exploitExploitDB-16166
exploit16166

10 more references in the full CVE brief

FAQ

Common Questions.

Integer underflow in the BowserWriteErrorLogEntry function in the Common Internet File System (CIFS) browser service in Mrxsmb.sys or bowser.sys in Active Directory in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold…
Affected: Windows 2003 Server (Microsoft); Windows Server 2003 (Microsoft). The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Is CVE-2011-0654 Running On Your Attack Surface?

Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.