CVE-2026-27928General(microsoft / windows_server_2016)

LOWCVSS 8.7 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Patch microsoft windows_server_2016 systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Improper input validation in Windows Hello allows an unauthorized attacker to bypass a security feature over a network.

microsoft CVEs Back to dashboard

1.0/ 10 priority

Sources & remediation

Vendor / third-party advisories

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27928

Weakness type (CWE)

CWE-20

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

windows_server_2016
windows_server_2019
windows_server_2022
windows_server_2022_23h2

Threat summary

Patch or workaround signal is available
5 mentions across 4 observed days
Momentum state: stable

What's happening

Patch or workaround mentioned in 1 signal
Technical details provided in 4 signals
General: 3 classified signals
Disclosure: 1 classified signal
Peaked 3d ago at 2 mentions (2026-04-14); latest day: 1
5 total mentions across 4 days

Affected systems

Vendors

microsoft

Products

windows_server_2016windows_server_2019windows_server_2022windows_server_2022_23h2windows_server_2025

Deep dive

Activity timeline5 mentions / 4d

Signal classification3 categories

General

360.0%

Patch

120.0%

Disclosure

120.0%

Referenced assets3 URLs

By indicator

Classification over time

Date	Total	Labels

2026-04-14	2	General1Patch1
2026-04-15	1	Disclosure1
2026-04-17	1	General1
2026-04-20	1	General1

Full discourse5 posts

إبراهيم بوحيمد | Ibrahim Buhaimed@buhaimedi174d
General
🪟 بيئة أنظمة Microsoft: (هذه الثغرات رغم ان تصنيفها بين High 8.0-8.7، تأثيرها التشغيلي خطير جداً) 🗄️ خدمة Active Directory: ⚠️ الخطر: تنفيذ أوامر عن بُعد (RCE) برقم (CVE-2026-33826). 🔐 بروتوكول Windows Kerberos: ⚠️ الخطر: تصعيد للصلاحيات برقم (CVE-2026-27912). 👋 ميزة Windows Hello: ⚠️ الخطر: تجاوز آلية المصادقة في Windows Hello برقم (CVE-2026-27928).
Post summary
The message lists three high‑severity CVEs—CVE‑2026‑33826 (RCE in Active Directory), CVE‑2026‑27912 (privilege escalation in Kerberos), and CVE‑2026‑27928 (auth bypass in Windows Hello)—but provides no details on hacks, exploit tools, active attacks, patches, or mitigations.
000451.6K
49.3K followersView on X
إبراهيم بوحيمد | Ibrahim Buhaimed@buhaimedi171d
General
رقم الثغرة: CVE-2026-27928 | التقييم: 8.7 (High). ⚠️ تأثير الثغره: تخطي آليات المصادقة الأمنية (Security Feature Bypass) عبر الشبكة دون الحاجة لأي صلاحيات مسبقة.
Post summary
The text announces CVE‑2026‑27928, assigns it a CVSS score of 8.7, and describes it as a network‑based authentication bypass, without any evidence of PoC, exploitation, or mitigation.
110511.4K
49.3K followersView on X
CVE@CVEnew176d
Disclosure
CVE-2026-27928 Improper input validation in Windows Hello allows an unauthorized attacker to bypass a security feature over a network. https://www.cve.org/CVERecord?id=CVE-2026-27928
Post summary
CVE‑2026‑27928 is a newly disclosed Windows Hello vulnerability where improper input validation permits attackers to bypass the security feature via the network.
00000140
57.2K followersView on X
Red Hornet Intel@RedHornet_Intel177d
Patch
CVE-2026-27928 | Microsoft Windows Server 2016 | Vulnerability Description Improper input validation in Windows Hello allows unauth attackers to bypass a security feature over a network by sending malformed input, enabling unauthorized access to protected functionality. Severity: High Exploitation: Unknown Public PoC: Unknown Patch Available: Yes Affected Product: Microsoft Windows Server 2016 Affected Version: >= 10.0.14393.0 and < 10.0.14393.9060 Sources Vendor: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27928
Post summary
The post reports a high‑severity Windows Hello flaw in Windows Server 2016, confirms no known exploitation or PoC, and notes a patch is available.
0000084
8 followersView on X
VulDB 🛡@vuldb177d
General
There is a new vulnerability with elevated criticality in Microsoft Windows (CVE-2026-27928) https://vuldb.com/vuln/357451
Post summary
The post announces a new Microsoft Windows vulnerability (CVE-2026-27928) with elevated criticality but provides no further technical details, proof of concept, or evidence of exploitation.
0000086
2.1K followersView on X

CPE platform detail5 entries

Part:

Vendor:

Product:

Version:

Target SW:

Target HW:

5 of 5 entries

Part	Vendor	Product	Version	Target SW	Target HW
OS	microsoft	windows_server_2016	-	-	-
OS	microsoft	windows_server_2019	-	-	-
OS	microsoft	windows_server_2022	-	-	-
OS	microsoft	windows_server_2022_23h2	-	-	-
OS	microsoft	windows_server_2025	-	-	-

Explore more

Back to dashboard microsoft CVEs windows_server_2016 vulnerabilities

What researchers are saying

CVE-2026-27928

إبراهيم بوحيمد | Ibrahim Buhaimed[verified]@buhaimediGeneral

The message lists three high‑severity CVEs—CVE‑2026‑33826 (RCE in Active Directory), CVE‑2026‑27912 (privilege escalation in Kerberos), and CVE‑2026‑27928 (auth bypass in Windows Hello)—but provides no details on hacks, exploit tools, active attacks, patches, or mitigations.

إبراهيم بوحيمد | Ibrahim Buhaimed[verified]@buhaimediGeneral

The text announces CVE‑2026‑27928, assigns it a CVSS score of 8.7, and describes it as a network‑based authentication bypass, without any evidence of PoC, exploitation, or mitigation.

Red Hornet Intel[verified]@RedHornet_IntelPatch

The post reports a high‑severity Windows Hello flaw in Windows Server 2016, confirms no known exploitation or PoC, and notes a patch is available.

CVE@CVEnewDisclosure

CVE‑2026‑27928 is a newly disclosed Windows Hello vulnerability where improper input validation permits attackers to bypass the security feature via the network.

VulDB 🛡@vuldbGeneral

The post announces a new Microsoft Windows vulnerability (CVE-2026-27928) with elevated criticality but provides no further technical details, proof of concept, or evidence of exploitation.