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Acronis Patches Exploited Vulnerability in cPanel Backup Plugin
Acronis urgently patched CVE-2026-87886 (CVSS 7.8), insecure file permissions enabling privilege escalation, exploited in targeted attacks on cPanel & WHM backups.
Acronis released urgent patches for CVE-2026-87886 (CVSS 7.8), insecure file permissions in the Backup plugin for cPanel & WHM and the Backup extension for Plesk that allow attackers to gain elevated privileges. Exploitation has been detected in the wild in limited, targeted attacks against the cPanel & WHM plugin, but not against the Plesk extension. All Linux versions of the plugin before build 1.9.3.1021 and the Plesk extension before build 1.8.11.638 are affected; Acronis urges immediate updates and has not shared technical details.
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Acronis warns of actively exploited flaw in its cPanel backup plugin
Acronis reports CVE-2026-87886, a CVSS 7.8 Linux privilege escalation in its cPanel/WHM and Plesk backup plugins, exploited in limited targeted attacks.
CVE-2026-87886 is a high-severity local privilege escalation flaw in Acronis Backup plugin for cPanel & WHM (fixed in 1.9.3 HF3) and the Plesk extension (fixed in 1.8.11). A low-privileged attacker can elevate permissions on a vulnerable Linux server to access or modify sensitive data without user interaction. Acronis says it detected exploitation in the wild in limited, targeted attacks based on a single customer report, with no IOCs published yet.
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Acronis Plugin Vulnerability in cPanel and Plesk Exploited in the Wild
Acronis patched CVE-2026-87886 (CVSS 7.8), a local privilege escalation flaw in its cPanel and Plesk backup plugins, exploited in targeted attacks.
Acronis released fixes for CVE-2026-87886 (CVSS 7.8, CWE-276), an insecure file permissions flaw in Linux-based backup components for cPanel & WHM and Plesk that enables local privilege escalation. The vendor observed limited, targeted exploitation in the wild before patches shipped. Fixes are available in Backup plugin for cPanel & WHM 1.9.3 HF3 and Backup extension for Plesk 1.8.11. A local attacker with low privileges could gain elevated access to backup data, control panels, and other customer accounts on shared hosting infrastructure.
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Acronis Backup Plugin Vulnerability Exploited in the Wild to Gain Elevated Linux Privileges
Acronis patched CVE-2026-87886 (CVSS 7.8), a local privilege escalation flaw in its cPanel & WHM backup plugin already exploited in targeted attacks.
Acronis released an urgent update for CVE-2026-87886 (CVSS 7.8), an insecure file permissions issue (CWE-276) in its Backup plugin for cPanel & WHM that lets a low-privileged local user elevate privileges on Linux servers. The company confirmed exploitation in limited, targeted attacks against cPanel & WHM deployments; the Plesk extension is also affected but no exploitation was observed there. Fixes are version 1.9.3 HF3 (build 1.9.3.1021 or later) for cPanel & WHM and 1.8.11 (build 1.8.11.638 or later) for Plesk.
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Acronis cPanel Backup Plugin Vulnerability Exploited in Targeted Attacks
Acronis warns CVE-2026-87886, a local privilege escalation flaw in its cPanel/WHM and Plesk backup plugins, is exploited in targeted attacks.
Acronis disclosed CVE-2026-87886 (CVSS 7.8), a high-severity local privilege escalation caused by insecure file permissions in its Backup plugin for cPanel & WHM and Backup extension for Plesk on Linux. Affected versions include cPanel & WHM plugin builds before 1.9.3.1021 (fixed in 1.9.3 HF3) and Plesk extension builds before 1.8.11.638. A low-privileged attacker could escalate permissions and potentially run arbitrary code, impacting confidentiality and integrity of the application. Acronis says exploitation has been detected in the wild in limited, targeted attacks, but has not identified the attackers, timing, or objectives.
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Acronis backup plugin flaw exploited in targeted attacks (CVE-2026-87886)
Acronis warns CVE-2026-87886, an authenticated Linux privilege escalation flaw in its cPanel, WHM, and Plesk backup plugins, is under limited targeted exploitation; patches released.
Acronis disclosed CVE-2026-87886, a privilege escalation vulnerability caused by insecure file permissions in its backup plugins for cPanel, WHM, and Plesk, platforms popular among hosting providers and MSPs. Exploitation has been detected in the wild in limited, targeted attacks against cPanel & WHM deployments, with no exploitation observed on Plesk so far, and the low-complexity attack requires no user interaction. Fixes shipped last week: backup plugin version 1.9.3 HF3 for cPanel & WHM and extension version 1.8.11 for Plesk.
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⚡ Weekly Recap: Chrome 0-Day, Router Hijacks, Coder Supply Chain Attack and More
Weekly recap: actively exploited Chrome V8 zero-day, MikroTik RouterOS zero-day chain, Magento StyleSmuggler backdoor, and critical N-able N-central flaws.
Google patched an actively exploited Chrome V8 type confusion zero-day, CVE-2026-85046 (CVSS 8.8), the sixth exploited Chrome zero-day of 2026. CERT Polska warned of the MikroTrick exploit chain (CVE-2026-67276 and CVE-2026-86060, CVSS 9.2) giving unauthenticated full control of MikroTik RouterOS devices via SSH, observed since September 2. Sansec disclosed the StyleSmuggler Magento/Adobe Commerce zero-day used since September 4 to inject a Rust backdoor into online stores, while N-able patched three critical N-central flaws (CVE-2026-86206, CVE-2026-86207, and CVE-2026-86218, CVSS 10.0) with Huntress observing likely exploitation. Elastic and Morphisec also detailed RevStealer, an information stealer spread via game cheats and a fake Claude Desktop app.
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May 2026 CVE Landscape
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