Type Vulnerability
A vulnerability in Windows Client for NFS could allow an attacker to execute code over a network.
Code execution
Windows Client for NFS Remote Code Execution Vulnerability
CVE-2026-88249
What this means
This is rated high severity (8.8 out of 10). There is no confirmed exploitation of it yet. Ask IT whether the affected products are in your estate.
Full vendor description
Use after free in Windows Client for NFS allows an unauthorized attacker to execute code over a network.
Scoring and exploitation
8.8/ 10
CVSS 3.1 base scoreHigh
Exploitable over the network without any account, but only if a user takes an action, such as opening a file or link. High impact on confidentiality, integrity and availability.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploitability
Longer bar: easier to attack
Attack vectorNetworkAV:N
Attack complexityLowAC:L
Privileges requiredNonePR:N
User interactionRequiredUI:R
ScopeUnchangedS:U
Impact
Longer bar: more harm
ConfidentialityHighC:H
IntegrityHighI:H
AvailabilityHighA:H
- Not reported
- Exploited in the wild
- Not confirmed in the
- Not reported
Weaknesses
CWE-416
References
1 link from the CVE record, grouped by site.
msrc.microsoft.com1 link