Vulnerability
CVE-2026-87886
Acronis Backup: privilege escalation
Most severe levelDEFCON 4 · Moderate risk
Official data
- CVSS 3.0
- 7.8 · high
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-276
- EPSS
- 0.23% probability of exploitation in the next 30 days, higher than 13% of CVEs
- CISA KEV catalogue
- Yes, since 16 September 2026
Sources: NVD (CVSS, weakness, publication), FIRST (EPSS), CISA (KEV catalogue).
Data read on 5 November 2026.
Timeline
- 16 September 2026Added to the CISA KEV catalogue
- 17 September 2026Published on NVD
- 17 September 2026First in the DefenceLevel briefing
In DefenceLevel briefings2 days
- 18 September 2026New in the last 24 hoursDEFCON 4
- 17 September 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.