November 1, 2026

CVE Watchtower

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CVE-2026-87886NVD

Vulnerability Summary

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.
Severity Level
HIGH(7.8)
Published Date
Sep 17, 2026
Last Modified
Sep 18, 2026
Exploitation Status
ACTIVE
EPSS Score (30-Day)
0.23%Probability
Root Weakness (CWE)
CWE-276: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v3.0 Base Metrics — Score 7.8 (HIGH)
Attack VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Acronis Acronis Backup plugin for cPanel & WHM >= unspecified and < 1.9.3.1021
  • Acronis Acronis Backup extension for Plesk >= unspecified and < 1.8.11.638
  • Acronis Acronis Backup plugin for DirectAdmin >= unspecified and < 1.2.3.238
Patched Versions
  • Acronis Acronis Backup plugin for cPanel & WHM 1.9.3.1021
  • Acronis Acronis Backup extension for Plesk 1.8.11.638
  • Acronis Acronis Backup plugin for DirectAdmin 1.2.3.238
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🚫Ad-Free — Uninterrupted experience.
🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.

External References