CVE-2026-6843
MEDIUMNano: nano: format string vulnerability leads to denial of service
Title source: cnaDescription
A flaw was found in nano. A local user could exploit a format string vulnerability in the `statusline()` function. By creating a directory with a name containing `printf` specifiers, the application attempts to display this name, leading to a segmentation fault (SEGV). This results in a Denial of Service (DoS) for the `nano` application.
References (2)
Core 2
Core References
Vdb Entry, X_Refsource_Redhat vdb-entry
x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-6843
Issue Tracking, X_Refsource_Redhat issue-tracking
x_refsource_redhat
RHBZ#2460017
https://bugzilla.redhat.com/show_bug.cgi?id=2460017
Scores
CVSS v3
5.5
EPSS
0.0011
EPSS Percentile
1.4%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-134
Status
published
Products (13)
gnu/nano
8.7
Red Hat/Red Hat Enterprise Linux 10
Red Hat/Red Hat Enterprise Linux 6
Red Hat/Red Hat Enterprise Linux 7
Red Hat/Red Hat Enterprise Linux 8
Red Hat/Red Hat Enterprise Linux 9
Red Hat/Red Hat OpenShift Container Platform 4
redhat/enterprise_linux
6.0
redhat/enterprise_linux
7.0
redhat/enterprise_linux
8.0
... and 3 more
Published
Apr 22, 2026
Tracked Since
Apr 22, 2026