CVE-2026-87886

Description

Local privilege escalation due to insecure file permissions. The following products are affected: Acronis Backup plugin for cPanel & WHM (Linux) before build 1.9.3.1021, Acronis Backup extension for Plesk (Linux) before build 1.8.11.638, Acronis Backup plugin for DirectAdmin (Linux) before build 1.2.3.238.

Scoring

• CVSS: 7.8 (HIGH, 3.0)
• EPSS exploitation probability: Not yet available
• EPSS percentile: Not yet available

CISA KEV status

• Added to KEV: 2026-09-16
• Remediation due date: 2026-09-19
• Known ransomware campaign use: Unknown

Weakness types (CWE)

• CWE-276

References

• https://security-advisory.acronis.com/advisories/SEC-10986
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-87886

More from Acronis

• CVE-2023-45249 — Cyber Infrastructure (ACI)