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CVE-2015-8948

27
FAUCET Score

CVE-2015-8948 describes an out-of-bounds read vulnerability in GNU libidn versions prior to 1.33, affecting products from Canonical, GNU, and OpenSUSE. This flaw, triggered by processing a zero byte as input, could allow remote attackers to obtain sensitive memory information. With a CVSS v3 score of 7.5 (High), it presents a low-complexity network attack vector with a high impact on confidentiality. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
42.1CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
13.2CPE matchmatch criteria
cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
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:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*

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:H/I:N/A:N

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

Exploit Intelligence

EPSS Score
6.72%
Probability of exploitation in next 30 days
EPSS Percentile
93.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0672 is in the 89th 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 Patches (3)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: libidn
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libidn
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libidn

Vendor Advisories (1)

redhatCVE-2015-8948Low

libidn: Out-of-bounds read due to use of fgets with fixed-size buffer

Aug 10, 2015

References

git.savannah.gnu.org / cgit/libidn.git/commit
Issue TrackingPatch
lists.opensuse.org / opensuse-updates/2016-08/msg00005.html
Third Party Advisory
lists.opensuse.org / opensuse-updates/2016-08/msg00098.html
Third Party Advisory
lists.apache.org / thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
lists.apache.org / thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
lists.gnu.org / archive/html/help-libidn/2016-07/msg00009.html
Vendor Advisory
debian.org / security/2016/dsa-3658
openwall.com / lists/oss-security/2016/07/20/6
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/07/21/4
Mailing ListThird Party Advisory
securityfocus.com / bid/92070
Third Party AdvisoryVDB Entry
ubuntu.com / usn/USN-3068-1
Third Party Advisory