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CVE-2009-3887

31
FAUCET Score

CVE-2009-3887 describes a critical directory traversal vulnerability (CWE-22) affecting ytnef_project ytnef. This flaw allows an unauthenticated attacker to write arbitrary files to sensitive locations on a vulnerable system with low attack complexity, potentially leading to complete compromise (CVSS 9.8 Critical). Despite its high severity, 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
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:ytnef_project:ytnef:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.53%
Probability of exploitation in next 30 days
EPSS Percentile
83.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0253 is in the 73rd percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2009-3887Important

evolution: TNEF attachment decoder input sanitization errors (oCERT-2009-013)

Sep 7, 2009

References

ocert.org / advisories/ocert-2009-013.html
Third Party Advisory
access.redhat.com / security/cve/cve-2009-3887
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
security-tracker.debian.org / tracker/CVE-2009-3887
Third Party Advisory
akitasecurity.nl / advisory.php
ExploitThird Party Advisory