Is there a public exploit for CVE-2026-121550?

No public exploit for CVE-2026-121550 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-121550?

CVE-2026-121550 scores CVSS 1 (v4.0), rated low.

What does CVE-2026-121550 affect?

CVE-2026-121550 affects jarun nnn.

1.0 Low

nnn through 5.3 contains an insecure file handling vulnerability that allows local attackers to redirect writes because main() accepts an…

CVE-2026-121550

nnn through 5.3 contains an insecure file handling vulnerability that allows local attackers to redirect writes because main() accepts an existing NNNFIFO path without verifying it is a FIFO. Attackers can pre-create the documented predictable /tmp/nnn.fifo path as a symlink or readable regular file, causing victim-writable files to be overwritten or leaking the victim's browsed paths.

Assessment

CVSS: 1 (v4.0)
Severity: Low
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 3 November 2026
Last updated: 3 November 2026
Affected: jarun · nnn
Assigner: VulnCheck

CVSS vectorCVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

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