CVE-2026-6843

Name: CVE-2026-6843
Creator: NVD / NIST
Published: 2026-04-22T09:16:26.963+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.11%

Last modified Jun 17, 2026

CVE-2026-6843 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A flaw was found in nano. A local user could exploit a format string vulnerability in the `statusline()` function. EPSS estimates a 0.11% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability

0.11%

1.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-134

Affected Software

Vendor	Product	Versions
Gnu	Nano	8.7
Redhat	Openshift Container Platform	4.0
Redhat	Enterprise Linux	6.0
Redhat	Enterprise Linux	7.0
Redhat	Enterprise Linux	8.0
Redhat	Enterprise Linux	9.0
Redhat	Enterprise Linux	10.0

References

https://access.redhat.com/security/cve/CVE-2026-6843Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2460017Issue Tracking, Third Party Advisory

Timeline

Published: Apr 22, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-6843?

How severe is CVE-2026-6843?

CVE-2026-6843 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.11% probability of exploitation in the next 30 days.

How do I fix CVE-2026-6843?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-6843?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST