The Dutch Nationaal Cyber Security Centrum (NCSC) has raised the alarm that exploitation of two critical Check Point VPN flaws – CVE-2026-85102 and CVE-2026-85103 – is imminent. In its September 12, 2026 advisory the agency warned that threat actors are likely to launch remote-code-execution campaigns within days, marking the first European regulator prediction of active exploitation for these flaws. This warning forces enterprises to reassess the trust model that underpins remote-access architectures.

Why the NCSC Warning Matters

Check Point's VPN suite powers thousands of corporate sites, especially in regulated sectors that rely on encrypted site-to-site tunnels. The NCSC’s high-likelihood rating indicates that attackers have already weaponised the bugs in private labs, even though no public proof-of-concept has surfaced. Any organization still running unpatched versions – notably the end-of-support branches R80 through R80.40, R81 and R81.10 – could suffer a full-system compromise from a single crafted packet.

Technical Breakdown

  • CVE-2026-85102 – Improper Certificate Validation: During VPN negotiation the gateway fails to fully validate certificate data. An attacker can inject malformed fields that trigger arbitrary code execution on the Security Gateway. The bug resides in the certificate parsing routine, a classic example of trust-model abuse where the gateway trusts a client-supplied certificate without sufficient checks.

  • CVE-2026-85103 – ASN.1 Heap Overflow: The VPN’s ASN.1 decoder mishandles certificate structures, leading to a heap overflow. Exploitation grants remote code execution on both Security Gateways and Security Management Servers. This flaw is especially dangerous because it affects the management plane, allowing attackers to alter policies, exfiltrate logs, or create persistent backdoors.

Both vulnerabilities are patched in Check Point’s LivePatch Take 24 for R81.20, R82 and R82.10, and in subsequent hotfix accumulators (R82.10 Take 44+, R82 Take 126+, R81.20 Take 166+). The Spark builds R82.00.10 Build 2325+ and R81.10.17 Build 4968+ also contain the fixes. Version R82.20 is immune, but many enterprises still operate older branches due to compatibility or licensing constraints.

The rapid NCSC warning challenges the industry assumption that enterprise-grade VPNs are inherently safer than consumer solutions. If exploitation spikes, we can expect a short-term surge in demand for alternative remote-access technologies – zero-trust network access (ZTNA) platforms, SD-WAN appliances with built-in micro-segmentation, and cloud-native VPN-as-a-Service offerings. Investors tracking the DeFi TVL dashboard have already noted a modest reallocation of security-budget capital toward zero-trust solutions, a trend that could accelerate as firms scramble to diversify their attack surface.

Immediate Action Items for Administrators

  1. Apply the September 9 patches – Verify that the appropriate LivePatch or hotfix version is installed. Use Check Point’s management console to confirm the patch level on each gateway.
  2. Audit LivePatch coverage – LivePatch mitigates the flaws without a reboot for R81.20, R82 and R82.10, but it does not protect older releases. Cross-reference your inventory against the affected version list.
  3. Restrict site-to-site VPN rules – Until patches are confirmed, limit tunnel endpoints to a whitelist of trusted IP ranges. This reduces the blast radius if an attacker gains foothold on a compromised gateway.
  4. Monitor NCSC and vendor advisories – The Dutch agency will likely publish indicators of compromise (IOCs) if exploitation attempts are observed. Integrate these IOCs into SIEM correlation rules.
  5. Consider a zero-trust overlay – Deploy a ZTNA broker that enforces identity-based policies on top of the existing VPN. This adds a second verification layer that can block malicious traffic even if the VPN tunnel is compromised.

Regulatory and Compliance Angles

European regulators have tightened remote-access requirements under the NIS2 directive, which mandates timely patching of critical infrastructure. Failure to remediate the Check Point flaws could be interpreted as non-compliance, exposing firms to fines and mandatory breach notifications. Moreover, the Dutch NCSC’s public warning may trigger sector-specific alerts in finance, healthcare and energy, where VPNs often serve as the primary conduit for remote operations.

What to Watch Next

  • Exploit chatter on underground forums – Threat-intel feeds will likely flag new exploit kits referencing CVE-2026-85102/03 within the next 48-72 hours.
  • Potential ransomware payloads – Given the gateway’s privileged position, attackers may use the foothold to deploy ransomware that encrypts on-premises data before exfiltration.
  • Vendor response cadence – Check Point’s next advisory is expected within two weeks, potentially introducing additional mitigations or a broader security-by-design roadmap.
  • Impact on crypto-related services – Crypto exchanges and DeFi platforms that rely on VPNs for secure node communication may need to accelerate migration to zero-trust or cloud-native VPN solutions to avoid service disruption.

Trusted Resources

Key Takeaway: The NCSC’s high-confidence warning that Check Point VPN flaws will be weaponised soon is a rare signal. Patch now, restrict tunnel access, and begin planning a zero-trust transition to avoid becoming the next headline.

Explore more on this topic