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Vulnerability record · CVE-2010-0816 · published 12 May 2010

CVE-2010-0816: Microsoft outlook express vulnerability

Microsoft · Outlook Express

Integer overflow in inetcomm.dll in Microsoft Outlook Express 5.5 SP2, 6, and 6 SP1; Windows Live Mail on Windows XP SP2 and SP3, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7; and Windows Mail on Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7 allows remote e-mail servers and man-in-the-middle attackers to execute arbitrary code via a crafted (1) POP3 or (2) IMAP response, as demonstrated by a certain +OK response on TCP port 110, aka "Outlook Express and Windows Mail Integer Overflow Vulnerability."

9.3 CVSS 2.0 High EPSS 20% · top 2.6% CWE-189 · CWE-189
9.3CVSS 2.0 base score
20%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
12References, 6 tagged exploit
16 Jun 2026Last modified by NVD

Description

Integer overflow in inetcomm.dll in Microsoft Outlook Express 5.5 SP2, 6, and 6 SP1; Windows Live Mail on Windows XP SP2 and SP3, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7; and Windows Mail on Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7 allows remote e-mail servers and man-in-the-middle attackers to execute arbitrary code via a crafted (1) POP3 or (2) IMAP response, as demonstrated by a certain +OK response on TCP port 110, aka "Outlook Express and Windows Mail Integer Overflow Vulnerability."

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

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://archives.neohapsis.com/archives/bugtraq/2010-05/0068.html Exploit
http://www.protekresearchlab.com/index.php?option=com_content&view=article&id=13&Itemid=13 Exploit
http://www.securityfocus.com/bid/40052 Exploit
http://www.us-cert.gov/cas/techalerts/TA10-131A.html US Government Resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-030
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6734
http://archives.neohapsis.com/archives/bugtraq/2010-05/0068.html Exploit
http://www.protekresearchlab.com/index.php?option=com_content&view=article&id=13&Itemid=13 Exploit
http://www.securityfocus.com/bid/40052 Exploit
http://www.us-cert.gov/cas/techalerts/TA10-131A.html US Government Resource
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-030
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6734

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2004-0380Outlook Express MHTML handler domain bypass leads to code executionThe MHTML protocol handler in Microsoft Outlook Express 5.5 SP2 through 6 SP1 fails to enforce domain restrictions, letting remote attackers bypass s…EPSS 63%analysed10.0CVE-1999-0967Microsoft internet explorer vulnerabilityBuffer overflow in the HTML library used by Internet Explorer, Outlook Express, and Windows Explorer via the res: local resource protocol.EPSS 6.9%9.3CVE-2010-3147Microsoft outlook express vulnerabilityUntrusted search path vulnerability in wab.exe 6.00.2900.5512 in Windows Address Book in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, W…EPSS 19%9.3CVE-2007-3897Microsoft Outlook Express and Windows Mail NNTP heap buffer overflowOutlook Express 6 and earlier, plus Windows Mail on Vista, contain a heap-based buffer overflow triggered by long responses from an NNTP news server.…EPSS 55%analysed8.8CVE-2007-4040Microsoft outlook cross-site scripting vulnerabilityArgument injection vulnerability involving Microsoft Outlook and Outlook Express, when certain URIs are registered, allows remote attackers to conduc…EPSS 13%8.8CVE-2003-1378Microsoft outlook permissions and access controls vulnerabilityMicrosoft Outlook Express 6.0 and Outlook 2000, with the security zone set to Internet Zone, allows remote attackers to execute arbitrary programs vi…EPSS 16%7.5CVE-2008-3068Microsoft access vulnerabilityMicrosoft Crypto API 5.131.2600.2180 through 6.0, as used in Outlook, Windows Live Mail, and Office 2007, performs Certificate Revocation List (CRL) …EPSS 17%7.5CVE-2005-1213Microsoft Outlook Express news reader stack buffer overflow via NNTP LIST responseThe news reader component of Microsoft Outlook Express (MSOE.DLL) contains a stack-based buffer overflow triggered by a long second field in an NNTP …EPSS 74%analysed

Source: NIST National Vulnerability Database (record CVE-2010-0816), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.