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CVE-2015-7981

17
FAUCET Score

CVE-2015-7981 describes an out-of-bounds read vulnerability in the png_convert_to_rfc1123 function within libpng versions 1.0.x, 1.2.x, and 1.4.x, affecting products from vendors like Canonical, Debian, and Red Hat. This flaw allows remote attackers to obtain sensitive process memory information by providing specially crafted tIME chunk data in an image file. With a CVSS score of 5.0, it is considered a medium-severity vulnerability, requiring no authentication and having low attack complexity, but only impacting confidentiality. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or inclusion in CISA's KEV catalog, though it has received some community and media attention.

Impacted Technologies

VendorProductVersion(s)CPE
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:*:*:*
15.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*
15.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

AV:N/AC:L/Au:N/C:P/I:N/A:N

Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
6.36%
Probability of exploitation in next 30 days
EPSS Percentile
92.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0636 is in the 90th percentile among its peer group of 23,725 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (18)

microsoftpatch availablevia msrc
Product: azl3 syslinux 6.04-11 on Azure Linux 3.0Fixed in: 6.04-11
microsoftpatch availablevia msrc
Product: 16848-17084Fixed in: 6.04-11
microsoftpatch availablevia msrc
Product: 16848-16817Fixed in: 6.04-11
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5 SupplementaryFixed in: java-1.7.0-ibm-1:1.7.0.9.30-1jpp.1.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5 SupplementaryFixed in: java-1.6.0-ibm-1:1.6.0.16.20-1jpp.1.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libpng-2:1.2.49-2.el6_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: java-1.7.1-ibm-1:1.7.1.3.30-1jpp.2.el6_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: java-1.6.0-ibm-1:1.6.0.16.20-1jpp.1.el6_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libpng12-0:1.2.50-7.el7_2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7 SupplementaryFixed in: java-1.7.1-ibm-1:1.7.1.3.30-1jpp.1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 5.6Fixed in: java-1.7.0-ibm-1:1.7.0.9.40-1jpp.1.el5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 5.6Fixed in: java-1.7.1-ibm-1:1.7.1.3.40-1jpp.1.el6_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 5.6Fixed in: spacewalk-java-0:2.0.2-109.el6sat
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 5.7Fixed in: java-1.7.1-ibm-1:1.7.1.3.40-1jpp.1.el6_7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 5.7Fixed in: spacewalk-java-0:2.3.8-146.el6sat
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: libpng
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 4Fixed in: libpng10
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: libpng

Vendor Advisories (2)

microsoft2015-Nov/CVE-2015-7981Moderate

The png_convert_to_rfc1123 function in png.c allows remote attackers to obtain sensitive process memory information

Nov 2, 2015
redhatCVE-2015-7981Low

libpng: Out-of-bounds read in png_convert_to_rfc1123

Oct 22, 2015

References

lists.fedoraproject.org / pipermail/package-announce/2015-November/172620.html
lists.fedoraproject.org / pipermail/package-announce/2015-November/172647.html
lists.fedoraproject.org / pipermail/package-announce/2015-November/172663.html
lists.opensuse.org / opensuse-security-announce/2015-11/msg00033.html
lists.opensuse.org / opensuse-updates/2015-11/msg00160.html
rhn.redhat.com / errata/RHSA-2015-2594.html
rhn.redhat.com / errata/RHSA-2015-2595.html
access.redhat.com / errata/RHSA-2016:1430
sourceforge.net / p/libpng/bugs/241
sourceforge.net / projects/libpng/files/libpng10/1.0.64
sourceforge.net / projects/libpng/files/libpng12/1.2.54
Patch
sourceforge.net / projects/libpng/files/libpng14/1.4.17
Exploit
security.gentoo.org / glsa/201611-08
debian.org / security/2015/dsa-3399
openwall.com / lists/oss-security/2015/10/26/1
openwall.com / lists/oss-security/2015/10/26/3
oracle.com / technetwork/topics/security/bulletinjul2016-3090568.html
oracle.com / technetwork/topics/security/linuxbulletinoct2015-2719645.html
securityfocus.com / bid/77304
securitytracker.com / id/1034393
ubuntu.com / usn/USN-2815-1