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CVE-2016-2779

25
FAUCET Score

CVE-2016-2779 describes a vulnerability in the runuser utility within util-linux, allowing local users to escape to the parent session. This is achieved by crafting a TIOCSTI ioctl call, which injects characters into the terminal's input buffer. The vulnerability has a CVSSv3 score of 7.8 (High), indicating a low attack complexity and requiring local access, but potentially leading to high impact on confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.24.2-1CPE matchmatch criteria
cpe:2.3:a:kernel:util-linux:2.24.2-1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
31.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 70th percentile among its peer group of 16,985 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 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: util-linux

Vendor Advisories (1)

redhatCVE-2016-2779Moderate

util-linux: runuser tty hijack via TIOCSTI ioctl

Feb 26, 2016

References

bugs.debian.org / cgi-bin/bugreport.cgi
Issue TrackingThird Party Advisory
openwall.com / lists/oss-security/2016/02/27/1
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/02/27/2
Mailing ListThird Party Advisory