Observed Signal · Nov 4, 2026 · Market Signal · Source: Sophos · Impact: 2/5
Sophos Firewall v23 is now available
Sophos Firewall v23 is now available (November 4, 2026).
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Recent verified developments and strategic activity across this market segment.
Sophos Firewall v23 is now in early access
Sophos announced that Sophos Firewall v23 is now in early access, delivering over 30 top-requested enhancements. The update introduces AI-powered assistance via Sophos Fusion, a modern REST API, redesigned firewall rule management, stronger high-availability monitoring, new identity integrations such as Entra ID and Google Workspace, and Secure by Design improvements including DNS over HTTPS and DNSSEC. Early access participants can download v23 through the Sophos Firewall v23 EAP Registration Page.
Citrix NetScaler vulnerability (CVE-2026-88779) in active exploitation
Sophos has published a new blog post about a Citrix NetScaler vulnerability (CVE-2026-88779) that is in active exploitation. The post is dated October 5, 2026 and is categorized under Threat Research.
Proof-of-concept exploit released for PHP vulnerabilities (CVE-2026-109618, CVE-2026-109619)
Sophos has published a new advisory regarding proof-of-concept exploits for PHP vulnerabilities CVE-2026-109618 and CVE-2026-109619, dated October 21, 2026.
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