CVE-2005-1213
HighPublic exploitStack-based buffer overflow in the news reader for Microsoft Outlook Express (MSOE.DLL) 5.5 SP2, 6, and 6 SP1 allows remote malicious NNTP servers to execute arbitrary code via a LIST response with a long second field.
Published Jun 14, 2005 · Updated Apr 15, 2026
Key Facts
Patch immediately- CVE-2005-1213 is a high-severity vulnerability (CVSS 7.5 v2) affecting Outlook Express (Microsoft).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 74% 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
7.5
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS (30-day exploit likelihood)
74%
Higher than 99.4% 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
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Description
Stack-based buffer overflow in the news reader for Microsoft Outlook Express (MSOE.DLL) 5.5 SP2, 6, and 6 SP1 allows remote malicious NNTP servers to execute arbitrary code via a LIST response with a long second field.
Affected Products
3 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Outlook ExpressMicrosoft | 5.5-sp2, 6.0, 6.0-sp1 | n/a |
Timeline
Publicly disclosed
Jun 14, 2005
Last updated
Apr 15, 2026
References
- patch20050614 Microsoft Outlook Express NNTP Response Parsing Buffer Overflow Vulnerability
- exploitMSF ms05_030_nntp.rb
- exploitExploitDB-1066
- exploitExploitDB-16379
- otherMS05-030
FAQ
Common Questions.
Stack-based buffer overflow in the news reader for Microsoft Outlook Express (MSOE.DLL) 5.5 SP2, 6, and 6 SP1 allows remote malicious NNTP servers to execute arbitrary code via a LIST response with a long second field.
Affected: Outlook Express (Microsoft) versions 5.5-sp2, 6.0, 6.0-sp1. 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.
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