---
title: "CVE-2011-0654: Integer underflow… | CubePath"
description: "Integer underflow in the BowserWriteErrorLogEntry function in the Common Internet File System (CIFS) browser service in Mrxsmb.sys or bowser.sys…"
language: en
source: https://cubepath.com/security/cve/CVE-2011-0654
---

# CVE-2011-0654: Integer underflow… | CubePath

## 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.

Official description from the CVE record, published by microsoft. Copyright © 1999-2026 The MITRE Corporation. See [/security/cve/legal](https://cubepath.com/security/cve/legal) for the CVE license. [View the record on cve.org](https://www.cve.org/CVERecord?id=CVE-2011-0654)

## Key data

### EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score

0.67662 (67.7% probability)

Percentile

99.3%

Scores of

Nov 10, 2026

Model

v2026.06.15

## References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

- [blogs.technet.com/b/mmpc/archive/2011/02/16/my-sweet-valent…](http://blogs.technet.com/b/mmpc/archive/2011/02/16/my-sweet-valentine-the-cifs-browser-protocol-heap-corruption-vulnerability.aspx)
- [TA11-102A](http://www.us-cert.gov/cas/techalerts/TA11-102A.html)  (us-cert.gov) third-party-advisory
- [VU#323172](http://www.kb.cert.org/vuls/id/323172)  (kb.cert.org) third-party-advisory
- [16166](http://www.exploit-db.com/exploits/16166)  (exploit-db.com) exploit
- [ADV-2011-0394](http://www.vupen.com/english/advisories/2011/0394)  (vupen.com) vdb-entry
- [blogs.technet.com/b/srd/archive/2011/02/16/notes-on-exploit…](http://blogs.technet.com/b/srd/archive/2011/02/16/notes-on-exploitability-of-the-recent-windows-browser-protocol-issue.aspx)
- [1025328](http://www.securitytracker.com/id?1025328)  (securitytracker.com) vdb-entry
- [20110214 MS Windows Server 2003 AD Pre-Auth BROWSER ELECTION Remote Heap Overflow](http://archives.neohapsis.com/archives/fulldisclosure/2011-02/0284.html)  (archives.neohapsis.com) mailing-list
- [46360](http://www.securityfocus.com/bid/46360)  (securityfocus.com) vdb-entry
- [ADV-2011-0938](http://www.vupen.com/english/advisories/2011/0938)  (vupen.com) vdb-entry
- [43299](http://secunia.com/advisories/43299)  (secunia.com) third-party-advisory
- [ms-win-server-browser-bo(65376)](https://exchange.xforce.ibmcloud.com/vulnerabilities/65376)  (exchange.xforce.ibmcloud.com) vdb-entry
- [MS11-019](https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-019)  (docs.microsoft.com) vendor-advisory
- [oval:org.mitre.oval:def:12637](https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12637)  (oval.cisecurity.org) vdb-entry signature

## Timeline

1. ID reserved Jan 28, 2011
2. Record published Feb 16, 2011
3. Record last updated Aug 6, 2024

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## About CubePath

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:58 UTC. [Sources and licenses](https://cubepath.com/security/cve/legal)