Systems
CVE-2026-95885
Network use-after-free in Windows Client for NFS allowing privilege escalation
Major vulnerability. Affects Microsoft Windows (widely deployed). Network-facing privilege escalation in an OS component can impact enterprise security and should be broadly communicated.
- CVSS
- 8.1Highscored by the publisher (CNA)
- Exploited in the wild
- Not knownnot in CISA KEV as of our last sync
- EPSS
- No score yet
- Fix
- Patch availablesee the advisories in the references
- Published
- 10 Nov 2026analysed here 12 Nov 2026
Summary
Impact
Remote use-after-free allows an attacker to elevate privileges on affected Windows systems, potentially gaining SYSTEM-level access over the network.
Triage
The summary, impact and action text on this page are written by our AI analysis pipeline, or taken from the NVD description when a CVE was imported from NVD. They are not the vendor's wording: check them against the sources. A longer AI executive summary and technical analysis are generated for signed-in accounts on the Max plan.
Affected products
| Product | Affected versions | Vendor says fixed in |
|---|---|---|
| Microsoft Windows 10 Version 1607 | >= 10.0.14393.0 and < 10.0.14393.9688Vendor says fixed in: not stated | |
| Microsoft Windows 10 Version 1809 | >= 10.0.17763.0 and < 10.0.17763.9487Vendor says fixed in: not stated | |
| Microsoft Windows 10 Version 21H2 | >= 10.0.19044.0 and < 10.0.19044.7846Vendor says fixed in: not stated | |
| Microsoft Windows 10 Version 22H2 | >= 10.0.19045.0 and < 10.0.19045.7846Vendor says fixed in: not stated | |
| Microsoft Windows 11 version 23H2 | >= 10.0.22631.0 and < 10.0.22631.7711Vendor says fixed in: not stated | |
| Microsoft Windows 11 Version 23H2 | >= 10.0.22631.0 and < 10.0.22631.7711Vendor says fixed in: not stated | |
| Microsoft Windows 11 Version 24H2 | >= 10.0.26100.0 and < 10.0.26100.9974Vendor says fixed in: not stated | |
| Microsoft Windows 11 Version 25H2 | >= 10.0.26200.0 and < 10.0.26200.9974Vendor says fixed in: not stated | |
| Microsoft Windows 11 version 26H1 | >= 10.0.28000.0 and < 10.0.28000.3501Vendor says fixed in: not stated | |
| Microsoft Windows 11 Version 26H2 | >= 10.0.26300.0 and < 10.0.26300.9974Vendor says fixed in: not stated | |
| Microsoft Windows Server 2016 | >= 10.0.14393.0 and < 10.0.14393.9688Vendor says fixed in: not stated | |
| Microsoft Windows Server 2016 (Server Core installation) | >= 10.0.14393.0 and < 10.0.14393.9688Vendor says fixed in: not stated | |
| Microsoft Windows Server 2019 | >= 10.0.17763.0 and < 10.0.17763.9487Vendor says fixed in: not stated | |
| Microsoft Windows Server 2019 (Server Core installation) | >= 10.0.17763.0 and < 10.0.17763.9487Vendor says fixed in: not stated | |
| Microsoft Windows Server 2022 | >= 10.0.20348.0 and < 10.0.20348.5870Vendor says fixed in: not stated | |
| Microsoft Windows Server 2025 | >= 10.0.26100.0 and < 10.0.26100.33822Vendor says fixed in: not stated | |
| Microsoft Windows Server 2025 (Server Core installation) | >= 10.0.26100.0 and < 10.0.26100.33822Vendor says fixed in: not stated |
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.
Products named in our analysis
- Microsoft Windows Client for NFS
- Windows (see MSRC advisory for affected versions)
Fix and mitigation
Action required
Immediate action required
WAF and other mitigations
Can a WAF block it? No. This is a use-after-free memory bug. Generic WAF rules do not recognise the input that triggers it; only a rule written for this specific CVE can, and only if the triggering request has a recognisable shape.
Also consider: patch
Based on the weakness type only; no CVE-specific evidence yet. We check Cloudflare, AWS, Google Cloud Armor and Azure; for Akamai, Imperva, Fastly, F5, ask your vendor.
Remediation steps (AI-written)
Step-by-step remediation is generated for accounts on the Max plan, for CVEs that match a technology in their stack. Add this technology to your stack to see the fix checklist.
Exploitation evidence
- CISA KEV catalog
- Not listed as of our last sync.
- Public exploit code
- None on record in Exploit-DB, Metasploit, Nuclei templates or PoC-in-GitHub.
- CISA SSVC
- exploitation none, automatable no, technical impact totalAssessed by CISA 11 Nov 2026 (SSVC 2.0.3). Exploitation is none, poc (public proof of concept) or active.
Timeline
- 10 Nov 2026Published
- 11 Nov 2026CISA SSVC assessment: exploitation nonesame day later
- 12 Nov 2026CVE record last updated2 days later
- 12 Nov 2026Analysed by vulneraibility.comsame day later
Common questions
Is CVE-2026-95885 being exploited?
Not confirmed. CVE-2026-95885 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.
How severe is CVE-2026-95885?
CVE-2026-95885 is rated High with a CVSS score of 8.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-95885?
Yes. A fix has been recorded for CVE-2026-95885. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-95885 affect?
CVE-2026-95885 affects Microsoft Windows Client for NFS, Windows (see MSRC advisory for affected versions). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-95885?
Install Microsoft's security update immediately; restrict NFS client network access until patched.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
References
1 reference in the CVE record, grouped by the tags the record gives them.
Patches (1)
- msrc.microsoft.com /update-guide/vulnerability/CVE-2026-95885
Where the data on this page comes from
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- CISA Vulnrichment (ADP): SSVC decision points
- FIRST EPSS: exploit probability and percentile
Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.
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