Public proof of conceptFix available

CVE-2026-26119

Q: Is CVE-2026-26119 actively exploited?

Active exploitation of CVE-2026-26119 has not been confirmed. Its EPSS score was 11.3% on 2026-10-25, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2026-26119?

CVE-2026-26119 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

A public proof of concept exists; no exploitation attested.

Published2026-02-17
Fixed in2511
WeaknessCWE-287

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Improper authentication in Windows Admin Center allows an authorized attacker to elevate privileges over a network.

Timeline

dates in UTC

2026-02-1723:16CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-25 15:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-26119?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-26119?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Microsoft windows admin center

Branch	Affected	Fixed in	Source
2511.x	< 2511	2511	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Microsoft windows admin center to 2511

Advisories and patches

msrc.microsoft.comPatch · Vendor Advisory

Detection

read 2026-10-25 00:28 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 2 repositories, unverifiedCyb3rWitch3r/CVE-2026-26119r3vpwnx/CVE-2026-26119

Sources

NVDCVE recordread 2026-10-23
CISA-ADPSSVC decisionnone2026-02-19
OpenCVESSVC decisionnone—
CNACVSS 3.18.8read 2026-10-23
CNAweakness (CWE)CWE-287read 2026-10-23
FIRST EPSSEPSS score11.3 %2026-10-25
PoC-in-GitHubproof of concept2read 2026-10-25

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: 2026-02-17
Last Modified: 2026-06-17
NVD status: Analyzed

Frequently asked questions

What is CVE-2026-26119?

Improper authentication in Windows Admin Center allows an authorized attacker to elevate privileges over a network.

Is CVE-2026-26119 actively exploited?

Active exploitation of CVE-2026-26119 has not been confirmed. Its EPSS score was 11.3% on 2026-10-25, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-26119?

CVE-2026-26119 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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