HOMEVULNERABILITIESCVE-2009-3721
HIGH

CVE-2009-3721

CWE-22Published: May 26, 2021· Updated: Jun 16, 2026

7.8
CVSS v3.1

Official Description

Multiple directory traversal and buffer overflow vulnerabilities were discovered in yTNEF, and in Evolution's TNEF parser that is derived from yTNEF. A crafted email could cause these applications to write data in arbitrary locations on the filesystem, crash, or potentially execute arbitrary code when decoding attachments.

NVD Source

Technical Analysis

CVE-2009-3721 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

gnome1 product(s)
evolution
ytnef_project1 product(s)
ytnef
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=521662
PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=521662
ADVISORYhttp://www.ocert.org/advisories/ocert-2009-013.html
ADVISORYhttp://www.ocert.org/advisories/ocert-2009-013.html

All References (4)

→
http://www.ocert.org/advisories/ocert-2009-013.htmlThird Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=521662Issue Tracking · Patch · Third Party Advisory
→
http://www.ocert.org/advisories/ocert-2009-013.htmlThird Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=521662Issue Tracking · Patch · Third Party Advisory

Quick Facts

CVE IDCVE-2009-3721
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-22
CISA KEVNo
Affected2 vendor(s)
PublishedMay 26, 2021

Related CVEs (CWE-22)

CVE-2015-0779
10.0
CVE-2010-5324
10.0
CVE-2013-6221
10.0
CVE-2011-2653
10.0
CVE-2025-52562
10.0
CVE-2010-5323
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2009-3721 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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