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- Help Net Security
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- Zero-days, Attacks, Malware & exploits
- Vulnerabilities
- 1 CVE Exploited
A Linux privilege escalation vulnerability (CVE-2026-87886) affecting Acronis’ backup extensions for cPanel, WebHost Manager (WHM), and Plesk, is being leveraged by attackers, the backup and recovery company warns. “Exploitation of this vulnerability has been detected in the wild in limited, targeted attacks against Acronis Backup plugin for cPanel & WHM deployments,” Acronis said in the…
If you run the affected product
- Find every instance – especially the ones reachable from the internet.
- Apply the vendor's patch or mitigation now: exploited flaws are fixed in days, not at the next patch cycle.
- Then check for signs it was used before you patched: web shells, new accounts, unusual outbound traffic.
More helpCISA's Known Exploited Vulnerabilities catalogue (opens in a new tab)
The vulnerabilities in this story
CVE-2026-87886 in the NVD (opens in a new tab)
- CVSS7.8High
- EPSS<1%chance of exploitation in 30 days
- CISA KEVExploitedon the list since 16 Sep
Exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog (CC0). Exploit prediction: EPSS by FIRST. This product uses the NVD API but is not endorsed or certified by the NVD.
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In our Blue Team Analyst programme you run a vulnerability scan, prioritise the output with CVSS, EPSS and asset criticality, and track remediation to closure with the teams who own the fix.
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