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CVE.org (no NVD analysis yet)· CNA microsoft

CVE-2026-119890: Windows DHCP Server Denial of Service Vulnerability

MediumCVSS 5.3 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 21/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.93% (FIRST EPSS); higher than 61.3% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: Windows Server 2016 10.0.14393.9688; Windows Server 2016 (Server Core installation) 10.0.14393.9688; Windows Server 2019 10.0.17763.9487.

Low priority for now. Upgrade to Windows Server 2016 10.0.14393.9688; Windows Server 2016 (Server Core installation) 10.0.14393.9688; Windows Server 2019 10.0.17763.9487 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Out-of-bounds read in Windows DHCP Server allows an authorized attacker to deny service over a network.

Published
Nov 10, 2026
Updated
Nov 12, 2026
EPSS
0.9% · 61th percentile

Report tools

JSON

Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.9%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · microsoft
5.3
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-119890

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Your free account also gets you

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  • 10 scans an hour on the security tools, at most 30 a day (3 a day without an account), an API key and MCP
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Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Using windows server 2016? Add it to your stack and be the first to know about CVEs like this one. (Windows Server, Active Directory)

Watch new CVEs for windows server 2016

When you'll hear from us

  • when a new CVE affecting this product is published
  • when a record in your stack enters KEV or is weaponized

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits every 10 minutes on paid plans, on the hour on the free plan.

Your free account also gets you

  • CVE alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools, at most 30 a day (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every Monday

Versions reported by the vendor

Affected version ranges reported by the assigning authority (microsoft). Independent of NVD's CPE analysis and usually ahead of it.

  • Microsoft Windows Server 2016

    • 10.0.14393.0 and later · before 10.0.14393.9688affected

  • Microsoft Windows Server 2016 (Server Core installation)

    • 10.0.14393.0 and later · before 10.0.14393.9688affected

  • Microsoft Windows Server 2019

    • 10.0.17763.0 and later · before 10.0.17763.9487affected

  • Microsoft Windows Server 2019 (Server Core installation)

    • 10.0.17763.0 and later · before 10.0.17763.9487affected

  • Microsoft Windows Server 2022

    • 10.0.20348.0 and later · before 10.0.20348.5870affected

  • Microsoft Windows Server 2025

    • 10.0.26100.0 and later · before 10.0.26100.33822affected

  • Microsoft Windows Server 2025 (Server Core installation)

    • 10.0.26100.0 and later · before 10.0.26100.33822affected

Same product

microsoft: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-38076Windows Remote Desktop Licensing Service Remote Code Execution Vulnerability
    40Plan
  • CVE-2021-34458Windows Kernel Remote Code Execution Vulnerability
    40Plan
  • CVE-2026-88243Windows DHCP Server Remote Code Execution Vulnerability
    39Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-119869Nov 10, 2026 · Windows Failover Cluster Elevation of Privilege Vulnerability
    25Monitor
  • ← EarlierCVE-2026-119883Nov 10, 2026 · Data Deduplication Security Feature Bypass Vulnerability
    13Monitor
  • Later →CVE-2026-119905Nov 10, 2026 · Windows DNS Spoofing Vulnerability
    19Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Windows Server 201610.0.14393.9688 · KB5131291Microsoft (MSRC)
Windows Server 2016 (Server Core installation)10.0.14393.9688 · KB5131291Microsoft (MSRC)
Windows Server 201910.0.17763.9487 · KB5131085Microsoft (MSRC)
Windows Server 2019 (Server Core installation)10.0.17763.9487 · KB5131085Microsoft (MSRC)
Windows Server 202210.0.20348.5870 · KB5131090Microsoft (MSRC)
Windows Server 2022 (Server Core installation)10.0.20348.5870 · KB5131090Microsoft (MSRC)
Windows Server 202510.0.26100.33730 · KB5131077Microsoft (MSRC)
Windows Server 202510.0.26100.33822 · KB5131080Microsoft (MSRC)
Windows Server 2025 (Server Core installation)10.0.26100.33730 · KB5131077Microsoft (MSRC)
Windows Server 2025 (Server Core installation)10.0.26100.33822 · KB5131080Microsoft (MSRC)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. Fix recorded+1 d
  3. TodayNov 13, 2026+2 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-882430 days apartWindows DHCP Server Remote Code Execution Vulnerability
    39Monitor
  • CVE-2026-1055790 days apartWindows DNS Information Disclosure Vulnerability
    30Monitor
  • CVE-2026-1084210 days apartWindows File Server Resource Management Service Elevation of Privilege Vulnerability
    30Monitor
  • CVE-2026-969720 days apartWindows DNS Server Information Disclosure Vulnerability
    30Monitor
  • CVE-2026-1084250 days apartWindows DNS Information Disclosure Vulnerability
    23Monitor
  • CVE-2026-969750 days apartRole: DNS Server Denial of Service Vulnerability
    23Monitor

Not on record for this CVE: patch commit or PR link · researcher credit · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-125 · Out-of-bounds Read

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. Fix✗ → ✓
  2. SSVC exploitation— → none
  3. Exploit maturity— → none

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records