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CVE-2017-6309

24
FAUCET Score

CVE-2017-6309 is a high-severity vulnerability affecting tnef before version 1.4.13, specifically impacting Debian Linux distributions. It involves two type confusion issues within the parse_file() function, which could lead to attacker-controlled invalid read and write operations. With a CVSS score of 7.8, this vulnerability requires user interaction (UI:R) and local access (AV:L) but could result in high confidentiality, integrity, and availability impacts (C:H/I:H/A:H). There is currently no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.4.12CPE matchmatch criteria
cpe:2.3:a:tnef_project:tnef:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.41%
Probability of exploitation in next 30 days
EPSS Percentile
69.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0141 is in the 68th percentile among its peer group of 11,615 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 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / verdammelt/tnef/blob/master/ChangeLog
PatchRelease NotesThird Party Advisory
github.com / verdammelt/tnef/commit/8dccf79857ceeb7a6d3e42c1e762e7b865d5344d
Issue TrackingPatchThird Party Advisory
security.gentoo.org / glsa/201708-02
Third Party Advisory
x41-dsec.de / lab/advisories/x41-2017-004-tnef
PatchThird Party Advisory
debian.org / security/2017/dsa-3798
Third Party Advisory
securityfocus.com / bid/96427
Third Party AdvisoryVDB Entry