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CVE-2016-3634

24
FAUCET Score

CVE-2016-3634 describes an out-of-bounds read vulnerability in the tagCompare function of LibTIFF versions 4.0.6 and earlier, specifically within the thumbnail tool's tif_dirinfo.c file. This flaw allows remote attackers to trigger a denial of service. With a CVSS v3 score of 7.5 (High), it can be exploited remotely with low attack complexity and no user interaction, leading to high availability impact. Despite its severity, there is no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and it has received negligible community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.0.6CPE matchmatch criteria
cpe:2.3:a:libtiff:libtiff:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.68%
Probability of exploitation in next 30 days
EPSS Percentile
74.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0168 is in the 57th percentile among its peer group of 51,455 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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 Advisories (1)

redhatCVE-2016-3634Low

libtiff: out-of-bounds read in the tagCompare function

Apr 8, 2016

References

bugzilla.maptools.org / show_bug.cgi
Issue Tracking
security.gentoo.org / glsa/201701-16
openwall.com / lists/oss-security/2016/04/08/13
Mailing ListThird Party Advisory
securityfocus.com / bid/93335