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Acronis cPanel Backup Plugin Vulnerability Exploited in Targeted Attacks

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Acronis has warned that a high-severity security flaw in its Backup plugin for cPanel and Web Host Manager (WHM) deployments has been exploited in the wild.

The vulnerability, tracked as CVE-2026-87886 (CVSS score: 7.8), is described as a case of local privilege escalation due to insecure file permissions. It affects the following versions –

Successful exploitation of the flaw could allow an attacker with low privileges to escalate their permissions on a susceptible Linux version, potentially enabling them to perform unauthorized actions or run arbitrary code that could impact the confidentiality and integrity of the application.

“This update contains fixes for 1 high-severity security vulnerability and should be installed immediately by all users,” Acronis noted in a separate advisory for 1.9.3 HF3. “Exploitation of this vulnerability has been detected in the wild in limited, targeted attacks.”

There are currently no details about the vulnerability, or who is behind the attacks exploiting it and what the end goals are. It’s also not clear when the activity was detected and since when the security flaw may have been exploited in the wild.

The Hacker News has contacted Acronis for comment and we will update the story if we hear back. Customers of the Acronis backup plugin are advised to apply the latest updates as soon as possible to stay protected.

📰 Original Source:TheHackerNews
✍️ Author: info@thehackernews.com (The Hacker News)

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