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Vulnerabilities & PatchesEmerging1 sourceSep 1, 2026 · 14:33via Security Affairs

Chaotic Eclipse Releases GenDigital Avast Antivirus ZeroDay PrettyPrague

Brief

Chaotic Eclipse released PrettyPrague, a PoC exploit for a GenDigital Avast Antivirus ZeroDay Elevation of Privileges Vulnerability

Security researcher Chaotic Eclipse , also known as INFINITE NIGHTMARE, MSNightmare and Nightmare-Eclipse, released a new zero-day exploit targeting GenDigital Avast Antivirus. The researcher named the exploit PrettyPrague, it triggers a privilege escalation flaw.

The researcher claims to have found another zero-day in an antimalware product, this time targeting Avast Antivirus. The PoC exploits a flaw in Avast Sandbox to dump the Windows SAM database and gain a SYSTEM-level shell. It reportedly works even on fully patched Avast Antivirus and Windows 11 25H2. The researcher also suspects the flaw may affect other Gen Digital products, including AVG and Norton.

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