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MalwareOct 23, 2026

Mirai Botnet Operators Join PHP2Shell Attacks as ASLR Bypass Exploits Emerge

Mirai botnet operators exploit PHP2Shell vulnerabilities, but no successful compromise confirmed.

Summary

Threat actors are attempting to leverage newly discovered PHP2Shell vulnerabilities (CVE-2026-109618, CVE-2026-109619) to spread a Mirai botnet variant called Potassium. While exploitation attempts have surged, no successful compromises have been confirmed, with researchers suggesting attackers are struggling to overcome exploit complexities and memory protection bypasses like ASLR.

The lesson from this incident

Full lesson

Threat actors are actively attempting to exploit two newly disclosed PHP2Shell vulnerabilities (CVE-2026-109618 and CVE-2026-109619) to deploy a Mirai botnet variant called Potassium, targeting internet-facing systems running vulnerable PHP installations. Although no successful compromises have been confirmed yet — partly due to exploit complexity and memory protections like ASLR — the window of opportunity is narrow and closes only when patches are applied. This incident illustrates the classic race between attacker exploitation and defender remediation, where delayed patching of publicly disclosed vulnerabilities dramatically increases risk. The involvement of an established botnet operation like Mirai underscores that even partially weaponized exploits can cause widespread harm once barriers are overcome, making proactive patch deployment critical.

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Indicators of Compromise

  • cve — CVE-2026-109618
  • cve — CVE-2026-109619

Entities

PHP (technology)ASLR (technology)