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CVE-2026-108131Suited to automated attack · CISA

Active Directory Federation Services (AD FS) Spoofing Vulnerability

CVSS score

7.5

EPSS probability

%0.7

Risk score

0.1

Published

5 d ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Official patch verified

Etkilenen ürün ve sürüm için yayımlanan güvenlik güncellemesini uygulayın.

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Vulnerability description

CVE AI research

The stored explanation is shown at once; refreshing evaluates the sources again.

DayBreach AI Explanation

Verified against sources

Active Directory Federation Services (AD FS) Spoofing Vulnerability

Sources read

3

Source agreement

1/3

Evidence confidence

%63

Short explanation

This vulnerability affecting Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network. According to S0, it carries a CVSS base score of 7.5 and a high severity rating.

Why does it matter?

Enabling unauthorized attackers to perform spoofing over a network poses severe integrity risks to authentication and trust layers.

What should be done?

  • Following vendor advisory and update guides
  • Applying the provided patch references
Note on uncertainty

1 alanda kaynak uyuşmazlığı var. DayBreach bu değerleri saklamadı; kaynak karşılaştırması aşağıda gösteriliyor.

Chain of evidence and sources2 verified claims

Yetkisiz bir saldırgan ağ üzerinden taklit gerçekleştirebilir.

S0 · daybreach-canonicalS1 · cvelistS2 · nvd

Zafiyet 7.5 CVSS taban puanına ve yüksek önem derecesine sahiptir.

S0 · daybreach-canonical
Show the technical text from the sources

No cwe for this issue in Active Directory Federation Services (AD FS) allows an unauthorized attacker to perform spoofing over a network.

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

CWE: CWE-295, CWE-290

Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-108131 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1microsoftWindows 10 Version 1607 View
2microsoftWindows 10 Version 1809 View
3microsoftWindows 10 Version 21H2 View
4microsoftWindows 10 Version 22H2 View
5microsoftWindows 11 version 23H2 View
6microsoftWindows 11 Version 24H2 View
7microsoftWindows 11 Version 25H2 View
8microsoftWindows 11 version 26H1 View
9microsoftWindows 11 Version 26H2 View
10microsoftwindows server 2012 View
11microsoftWindows Server 2012 (Server Core installation) View
12microsoftWindows Server 2012 R2 View
13microsoftWindows Server 2012 R2 (Server Core installation) View
14microsoftwindows server 2016 View
15microsoftWindows Server 2016 (Server Core installation) View
16microsoftwindows server 2019 View
17microsoftWindows Server 2019 (Server Core installation) View
18microsoftwindows server 2022 View
19microsoftwindows server 2025 View
20microsoftWindows Server 2025 (Server Core installation) View
Total affected vendors: 1|Products: 20

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
7.5CVSS V31HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NNVD
7.5CVSS 3.x—CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:CMicrosoft MSRC
7.5CVSS V3_1HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:CCVE CNA

Patch and Remediation Guide

Solution & Remediation Advisory

Patch verified

22 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

cvelist

Active Directory Federation Services (AD FS) Spoofing Vulnerability

Open source
reference

Active Directory Federation Services (AD FS) Spoofing Vulnerability

Open source
reference

5126835

Open source
reference

Yama veya çözüm referansı

Open source
reference

5126836

Open source
reference

Yama veya çözüm referansı

Open source
reference

5126868

Open source
reference

Yama veya çözüm referansı

Open source
reference

5126651

Open source
reference

Yama veya çözüm referansı

Open source
reference

5126657

Open source
reference

Yama veya çözüm referansı

Open source
Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Apply the official update named in the evidence only to the matching product and version.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-108131 is associated with the following CWEs:

CWE-295: Common Weakness Enumeration Entry CWE-295CWE-290: Common Weakness Enumeration Entry CWE-290

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-108131 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsGerekmiyor
UserGerekmiyor

Official Sources and Advisories

Active Directory Federation Services (AD FS) Spoofing Vulnerabilitypatch5126835patchhttps://support.microsoft.com/help/5126835patch5126836patchhttps://support.microsoft.com/help/5126836patch5126868patchhttps://support.microsoft.com/help/5126868patch5126651patchhttps://support.microsoft.com/help/5126651patch5126657patch

CVSS Vector Radar Chart

7.5 / 10
Attack VectorNetworkComplexityLowPrivilegesNoneUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityNone

Vulnerability Scoring Details

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone required
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)None

Yama doğrulandı

22 doğrulanmış yama veya düzeltilmiş sürüm kanıtı bulundu.

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Weakness Type (CWE & CAPEC)

CWE-295 CWE-290

Similar Vulnerabilities

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