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CVE-2015-7801

29
FAUCET Score

CVE-2015-7801 describes a use-after-free vulnerability in OptiPNG 0.6.4, affecting various OptiPNG and Ubuntu Linux distributions. This high-severity flaw (CVSS 8.8) allows remote attackers to execute arbitrary code by tricking a user into processing a specially crafted PNG file, leading to potential complete compromise of confidentiality, integrity, and availability. Despite its high risk, there is no public exploit intelligence available, nor is it listed in CISA's KEV catalog. Community discussion and media coverage for this CVE are minimal, indicating a low level of public awareness or active exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.6.4CPE matchmatch criteria
cpe:2.3:a:optipng_project:optipng:*:*:*:*:*:*:*:*
12.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
15.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
5.38%
Probability of exploitation in next 30 days
EPSS Percentile
91.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0538 is in the 92nd percentile among its peer group of 14,848 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 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 0.1 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2015-7801Moderate

optipng: Use-after-free vulnerability in 0.6.4

Sep 16, 2015

References

bugzilla.redhat.com / show_bug.cgi
openwall.com / lists/oss-security/2015/09/16/1
Exploit
ubuntu.com / usn/USN-2951-1