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CVE-2018-16336

23
FAUCET Score

CVE-2018-16336 is a heap-based buffer over-read vulnerability in Exiv2 v0.26, specifically within the Exiv2::Internal::PngChunk::parseTXTChunk function, affecting various Canonical and Debian Linux distributions. This vulnerability can be triggered by remote attackers using a crafted image file, leading to a denial of service. With a CVSS score of 6.5 (Medium), it requires user interaction (UI:R) but has low attack complexity (AC:L) and can result in high availability impact (A:H). 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
0.26CPE matchmatch criteria
cpe:2.3:a:exiv2:exiv2:0.26:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
18.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*

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
2.73%
Probability of exploitation in next 30 days
EPSS Percentile
84.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0273 is in the 93rd percentile among its peer group of 26,236 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 (2)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: exiv2
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: exiv2

Vendor Advisories (1)

redhatCVE-2018-16336Low

exiv2: heap-based buffer over-read via a crafted image file

Aug 13, 2018

References

github.com / Exiv2/exiv2/issues/400
Third Party Advisory
lists.debian.org / debian-lts-announce/2018/10/msg00012.html
Mailing ListThird Party Advisory
usn.ubuntu.com / 3852-1
Third Party Advisory