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CVE-2007-3897

54
FAUCET Score

CVE-2007-3897 describes a critical heap-based buffer overflow vulnerability in Microsoft Outlook Express 6 and earlier, and Windows Mail for Vista. This flaw allows remote NNTP servers to execute arbitrary code on affected systems by sending crafted, long NNTP responses that corrupt memory. With a CVSS score of 9.3 and a FAUCET Risk Score of 98/100, this vulnerability is highly severe, requiring no authentication and having complete impact on confidentiality, integrity, and availability. Despite its high severity and EPSS indicating a higher likelihood of exploitation compared to most CVEs, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 6.0CPE matchmatch criteria
cpe:2.3:a:microsoft:outlook_express:*:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:a:microsoft:outlook_express:6.0:sp1:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:windows_mail:-:*:*:*:*:vista:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
54.63%
Probability of exploitation in next 30 days
EPSS Percentile
98.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.5463 is in the 98th percentile among its peer group of 8,914 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

labs.idefense.com / intelligence/vulnerabilities/display.php
Broken Link
docs.microsoft.com / en-us/security-updates/securitybulletins/2007/ms07-056
PatchVendor Advisory
secunia.com / advisories/27112
Third Party Advisory
securitytracker.com / id
Third Party AdvisoryVDB Entry
securitytracker.com / id
Third Party AdvisoryVDB Entry
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1706
Third Party Advisory
securityfocus.com / archive/1/481983/100/100/threaded
Third Party AdvisoryVDB Entry
securityfocus.com / archive/1/482366/100/0/threaded
Third Party AdvisoryVDB Entry
securityfocus.com / bid/25908
Third Party AdvisoryVDB Entry
us-cert.gov / cas/techalerts/TA07-282A.html
Third Party AdvisoryUS Government Resource
vupen.com / english/advisories/2007/3436
Permissions RequiredThird Party Advisory