CVE-2026-96219
9.8CriticalPublished 13 Oct 2026 · NVD status: Analyzed · AI triage by gemini-3.8-flash
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Impact
- Full C/I/A compromise
- Weakness
- CWE-787
Impact
Unauthenticated attackers can execute arbitrary code over the network with SYSTEM privileges via LSASS. They only need network access to the target Windows host.
Root cause
An out-of-bounds write vulnerability exists within the Local Security Authority Subsystem Service (LSASS).
Affected systems
Versions not listed — check the vendor advisory.
CVSS v3.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Fix & remediation
Apply the relevant Microsoft security update from the vendor advisory; if patching must wait, block inbound traffic on authentication and RPC ports (such as SMB port 445 and RPC port 135) at the perimeter or host firewall.
AI-suggested. Run it in staging first and check it against the vendor advisory. Why?
NVD description
Out-of-bounds write in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to execute code over a network.