CVE-2026-87886

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.

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CVSS v3.1

7.8 HIGH

EPSS

0.28%

probability of exploitation in 30 days

CISA KEV

Listed

confirmed active exploitation

News coverage

sources referencing this CVE

CVSS v3.1 Detail

Attack VectorLOCAL

Attack ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

ScopeUNCHANGED

ConfidentialityHIGH

IntegrityHIGH

AvailabilityHIGH

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Connections

3 relationships

CWE-276

source

Timeline

disclosure → media coverage

Sep 17, 2026

Disclosure — published as a CVE record.

Sep 20, 2026

helpnetsecurity.com reports: Week in review: Cisco patches exploited email gateway 0-day, Revolut breach