NVD disclosure day

Published threat advisories for April 30, 2026

CVE advisoryCRITICAL

CVE-2026-2311

IBM i systems can be taken over by attackers through the web interface.

Halo Surface Signal: 2 out of 5 — less likely to be public-facing.

An external attacker could exploit a flaw in the IBM i Web Administration interface to execute unauthorized code with full administrative privileges. This could allow them to take complete control of the server, putting critical business workflows and sensitive data at significant risk.

CVE advisoryHIGH

CVE-2026-3833

GnuTLS allows attackers to bypass certificate checks potentially exposing customer data or service control.

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

A GnuTLS flaw lets attackers bypass certificate checks by exploiting name casing differences. This could allow unauthorized access to services and sensitive data by tricking systems into accepting invalid certificates.

CVE advisoryCRITICAL

CVE-2026-36760

Authenticated users can write any file on your system using JeeSite.

Halo Surface Signal: 2 out of 5 — less likely to be public-facing.

In JeeSite, an internal attacker with legitimate access can trick the system into saving files to unauthorized locations on the server. This could allow them to overwrite critical system files, potentially leading to a full compromise of the affected server.

CVE advisoryCRITICAL

CVE-2026-4670

MOVEit Automation allows attackers to bypass login, potentially stealing customer data or disrupting services.

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

MOVEit Automation has a critical flaw allowing anyone to bypass login, potentially exposing sensitive customer data or disrupting operations. This requires immediate attention due to the product's common use for sensitive file transfers.

CVE advisoryCRITICAL

CVE-2026-22070

ColorOS Assistant could allow an internal attacker to access sensitive system files.

Halo Surface Signal: 1 out of 5 — much less likely to be public-facing.

An internal attacker with a malicious application on a device can trick ColorOS Assistant into overwriting sensitive configuration files. This enables unauthorized changes to device settings and could grant the attacker complete control over the affected device.