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CVE-2017-9403

22
FAUCET Score

CVE-2017-9403 is a memory leak vulnerability in the TIFFReadDirEntryLong8Array function of LibTIFF 4.0.7, affecting various Canonical and Debian Linux distributions and their LibTIFF packages. This vulnerability has a CVSS score of 6.5 (Medium), indicating it can be exploited remotely with low complexity, requiring user interaction, to cause a denial of service. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.0.7CPE matchmatch criteria
cpe:2.3:a:libtiff:libtiff:4.0.7:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.25%
Probability of exploitation in next 30 days
EPSS Percentile
66.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0125 is in the 79th percentile among its peer group of 26,234 CVEs.

Social Chatter

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

Vendor Patches (4)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: libtiff
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libtiff
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: compat-libtiff3
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libtiff

Vendor Advisories (1)

redhatCVE-2017-9403Low

libtiff: Memory leak in TIFFReadDirEntryLong8Array

Apr 20, 2017

References

bugzilla.maptools.org / show_bug.cgi
Issue TrackingThird Party Advisory
security.gentoo.org / glsa/201709-27
Third Party Advisory
usn.ubuntu.com / 3602-1
Third Party Advisory
debian.org / security/2017/dsa-3903
Third Party Advisory