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Saturday, 24 October 2026
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Cyber Security

Vulnerabilities, threats and incidents, security advisories from CERT-EU, ENISA, CISA and NCSC, AI security and regulation (NIS2, CRA).

“AWS” — 4 articles ✕

AWS Honeypot Data Shows PHP Flaw Was Hit by Attackers Before Public Patch

Amazon's MadPot honeypot network recorded an exploitation attempt against what is now tracked as CVE-2026-109618 and CVE-2026-109619 — nicknamed PHP2Shell — on October 17, 2026, four days before the vendor publicly disclosed the flaw. The request came from a commercial anonymization network, suggesting a threat actor had working exploit code ahead of the official embargo lift. When the embargo ended on October 21 at 1400 UTC, AWS says proof-of-concept code and real attack traffic hit its sensors within hours, from several distinct sets of infrastructure. AWS argues this points to a structural shift: AI-assisted analysis is making it faster to turn a patch or advisory into a working exploit, shrinking the old assumption that most attacks follow a public PoC.

AWS Security

CERT-EU warns of actively exploited critical SharePoint RCE flaws

CERT-EU has updated its advisory on critical vulnerabilities in Microsoft SharePoint Server, confirming active exploitation of CVE-2026-50522 (CVSS 9.8), a deserialisation flaw allowing remote code execution. This is part of a wider series of recently patched critical bugs — CVE-2026-32201, CVE-2026-45659, CVE-2026-56164 and CVE-2026-58644 — affecting on-premise SharePoint Server instances, some exploitable without authentication.

CERT-EU

Critical RCE Vulnerabilities Found in Check Point VPN Gateways

On 9 September 2026, Check Point released emergency hotfixes for two critical vulnerabilities (CVE-2026-85102 and CVE-2026-85103), both with CVSS 9.8, affecting Security Gateway, Security Management Server, and Spark Firewall deployments using Remote Access VPN or Site-to-Site VPN. Both flaws allow unauthenticated remote attackers to execute arbitrary code on affected appliances. CERT-EU urges immediate patching, prioritising internet-facing and perimeter devices.

CERT-EU

Critical Citrix NetScaler Vulnerabilities Actively Exploited

Citrix disclosed 8 vulnerabilities affecting customer-managed NetScaler ADC and NetScaler Gateway, including 2 critical unauthenticated RCE flaws with CVSS 9.5 that Citrix confirms are being actively exploited. CERT-EU urges immediate patching and compromise assessment for internet-facing appliances. Other flaws include HTTP request smuggling, memory overflow bugs leading to RCE/DoS, a policy bypass, and a TCP ISN prediction issue.

CERT-EU