CVE-2007-3897

Heap-based buffer overflow in Microsoft Outlook Express 6 and earlier, and Windows Mail for Vista, allows remote Network News Transfer Protocol (NNTP) servers to execute arbitrary code via long NNTP responses that trigger memory corruption.

Published: 2007-10-09 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2007-3897 is rated High Risk (66.8/100): CVSS Critical severity, with high exploitation likelihood (EPSS 54.63%, 99th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2007-3897

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 64.36% 54.63% -9.73%
2 2026-05-28 64.04% 64.36% +0.33%
3 2025-03-30 — 64.04% —

Full EPSS history (19 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2007-3897

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.3 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 10.0 [email protected]

Weakness enumeration for CVE-2007-3897

Affected software / configurations for CVE-2007-3897

Vendor Product Version Raw CPE
microsoft outlook_express <= 6.0 cpe:2.3:a:microsoft:outlook_express:*:*:*:*:*:*:*:*
microsoft outlook_express 6.0 cpe:2.3:a:microsoft:outlook_express:6.0:sp1:*:*:*:*:*:*
microsoft windows_mail — cpe:2.3:a:microsoft:windows_mail:-:*:*:*:*:vista:*:*

References for CVE-2007-3897

URL Tags
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=607 Broken Link
http://secunia.com/advisories/27112 Third Party Advisory
http://securitytracker.com/id?1018785 Third Party Advisory VDB Entry
http://securitytracker.com/id?1018786 Third Party Advisory VDB Entry
http://www.securityfocus.com/archive/1/481983/100/100/threaded Third Party Advisory VDB Entry
http://www.securityfocus.com/archive/1/482366/100/0/threaded Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/25908 Third Party Advisory VDB Entry
http://www.us-cert.gov/cas/techalerts/TA07-282A.html Third Party Advisory US Government Resource
http://www.vupen.com/english/advisories/2007/3436 Permissions Required Third Party Advisory
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-056 Patch Vendor Advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1706 Third Party Advisory
cvelogic Threat Intelligence