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."
CVE-2010-0816
- No confirmed exploitation signals yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- —
- EG Score
- 0.0(none)
- EPSS
- 97.2%
- KEV
- Not listed
Published
May 12, 2010
Last Modified
April 29, 2026
References (12)
- secure@microsofthttp://archives.neohapsis.com/archives/bugtraq/2010-05/0068.html
- secure@microsofthttp://www.protekresearchlab.com/index.php?option=com_content&view=article&id=13&Itemid=13
- secure@microsofthttp://www.securityfocus.com/bid/40052
- secure@microsofthttp://www.us-cert.gov/cas/techalerts/TA10-131A.html
- secure@microsofthttps://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-030
- secure@microsofthttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6734
- af854a3a-2127-422b-91ae-364da2661108http://archives.neohapsis.com/archives/bugtraq/2010-05/0068.html
- af854a3a-2127-422b-91ae-364da2661108http://www.protekresearchlab.com/index.php?option=com_content&view=article&id=13&Itemid=13
- af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/40052
- af854a3a-2127-422b-91ae-364da2661108http://www.us-cert.gov/cas/techalerts/TA10-131A.html
- af854a3a-2127-422b-91ae-364da2661108https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-030
- af854a3a-2127-422b-91ae-364da2661108https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6734
Data Freshness Timeline
(refreshed 5× in last 7d / 33× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-06 02:19 UTCEPSS rescore
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- 2026-06-13 22:57 UTCEPSS rescore
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- 2026-05-29 13:40 UTCEPSS rescore
- 2026-05-29 11:41 UTCEG score recompute
- 2026-05-29 11:41 UTCGHSA enrichment
- 2026-05-28 13:42 UTCEPSS rescore
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- 2026-05-27 13:38 UTCEPSS rescore
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- 2026-05-18 21:29 UTCEPSS rescore
- 2026-05-18 21:29 UTCEPSS rescore
Publicly available exploits
(1 reference)Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- Exploit-DBEDB-12564✓ verifiedFirst seen May 11, 2010
Microsoft Windows Outlook Express and Windows Mail - Integer Overflow
Open source ↗
Frequently asked(4)
What is CVE-2010-0816?
When was CVE-2010-0816 disclosed?
Is CVE-2010-0816 actively exploited?
How do I remediate CVE-2010-0816?
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