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CVE-2026-121549

4.1 mediumEPSS 0.1%

Medium (4.1). EPSS 0.1% estimated probability of exploitation activity in the next 30 days.

On this page
nnn through 5.3 contains an insecure temporary file vulnerability in the pdfread and nuke plugins that allows local attackers to overwrite files by exploiting predictable paths in /tmp. Attackers can pre-create a symlink at the name-derived or PID-derived path so the victim's plugin truncates and overwrites any file the victim can write.

Severity

CVSS 4.0

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

CVSS 3.1

4.4 medium
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N
EPSS
0.1% estimated probability of exploitation activity in the next 30 days; 1st percentile. Scored 2026-11-04. A forecast for this CVE across the internet, not for your own systems.
CWE
CWE-377 Insecure Temporary File deprecated by MITRE
OWASP Top 10
A01:2025 Broken Access Control
Published
Modified
Record from
the NVD, synced

Ask an AI about this CVE

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Versions

From the CNA's record in the CVE List.

ProductAffected
jarun nnnthrough 5.3

Attack patterns (CAPEC)

  • CAPEC-149 Explore for Predictable Temporary File Names Severity: Medium
  • CAPEC-155 Screen Temporary Files for Sensitive Information Likelihood: Medium · Severity: Medium

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

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