Vulnerability
CVE-2026-27447
OpenPrinting CUPS: incorrect authorization
Most severe levelDEFCON 4 · Moderate risk
Official data
- CVSS 3.1
- 6.3 · medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N - Weakness
- CWE-863
- EPSS
- 0.28% probability of exploitation in the next 30 days, higher than 20% of CVEs
- CISA KEV catalogue
- No
Sources: NVD (CVSS, weakness, publication), FIRST (EPSS), CISA (KEV catalogue).
Data read on 25 October 2026.
Timeline
- 3 April 2026Published on NVD
- 4 April 2026First in the DefenceLevel briefing
In DefenceLevel briefings2 days
- 5 April 2026Worth watching
- 4 April 2026New in the last 24 hoursDEFCON 4
Last 12 months.
The full analysis is in the briefingThe full analysis is in your archive
Why it matters now, who is affected and what to do: every day at 05:00 UTC, for subscribers.Why it matters, who is affected and what to do, as in the daily briefing.