Page generated: 11 Nov 2026, 09:34 UTC
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CVE-2026-56155

Insufficient granularity of access control in Active Directory Federation Services (AD FS) allows an authorized attacker to elevate privileges locally.

CVSS 7.8 (HIGH) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
0.0/10
REALITY · THREAT PRIORITY
8.2/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 7.8: +1.17
  • Fresh EPSS: 0.35%: +0.00

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 24 documents and public datasets.

Hype components

Headline sample (25%)
0/100
Press, 30 days (60%)
0/100
Grounded branding (15%)
0/100
HYPE TOTAL0/100

Sources and documents

JPCERT コーディネーションセンター
Press · 31 Jul 2026, 07:00 · [Updated] Microsoft Releases July 2026 Security Updates - JPCERT コーディネーションセンター
https://tech-insider.org/
Press · 23 Jul 2026, 07:00 · Microsoft Patches Record 570 CVEs, 2 Zero-Days [2026] - https://tech-insider.org/
SOC Prime
Press · 16 Jul 2026, 07:00 · CVE-2026-56164 & CVE-2026-56155 Zero-Days - SOC Prime
Tech Times
Press · 16 Jul 2026, 07:00 · Microsoft Patches 622 CVEs: Active SharePoint and AD FS Zero-Days Demand First Action - Tech Times
The Cyber Express
Press · 15 Jul 2026, 09:58 · Microsoft Patch Tuesday July 2026 Fixes 622 Security Flaws - The Cyber Express
See all 24 source documents
The Hacker News
Press · 15 Jul 2026, 07:00 · Researcher Drops New Windows Zero-Day PoC Hours After Microsoft Patch Tuesday - The Hacker News
The Record from Recorded Future News
Press · 15 Jul 2026, 07:00 · Microsoft smashes Patch Tuesday record for second successive month - The Record from Recorded Future News
CyberSecurityNews
Press · 15 Jul 2026, 07:00 · Microsoft Active Directory Services 0-Day Vulnerability Actively Exploited in the Wild - CyberSecurityNews
Field Effect
Press · 15 Jul 2026, 07:00 · Microsoft July 2026 Patch Tuesday Addresses Exploited SharePoint Vulnerabilities - Field Effect
SecurityBrief Australia
Press · 15 Jul 2026, 07:00 · Microsoft patches 622 flaws, including SharePoint bugs - SecurityBrief Australia
Help Net Security
Press · 15 Jul 2026, 07:00 · AI-driven bug hunting fuels record Microsoft Patch Tuesday - Help Net Security
gHacks
Press · 15 Jul 2026, 07:00 · Microsoft July 2026 Patch Tuesday Fixes Record 570 Flaws Including Three Zero-Days - gHacks
CCB Belgium
Press · 15 Jul 2026, 07:00 · Warning: Microsoft Patch Tuesday July 2026 patches 569 vulnerabilities (56 Critical, 510 Important & 3 Moderate), patch Immediately!! - CCB Belgium
Forbes
Press · 15 Jul 2026, 07:00 · Microsoft Warns 2 Zero-Days Already Exploited In Attacks: Update Now - Forbes
Zero Day Initiative - Blog
Press · 14 Jul 2026, 17:56 · The July 2026 Security Update Review
The Register
Press · 14 Jul 2026, 07:00 · Patchpocalypse Now: Microsoft tops last month's record with 622 Patch Tuesday CVEs - The Register
Cisco Talos Blog
Press · 14 Jul 2026, 07:00 · Microsoft Patch Tuesday for July 2026 — Snort rules and prominent vulnerabilities - Cisco Talos Blog
thezdi.com
Press · 14 Jul 2026, 07:00 · The July 2026 Security Update Review - thezdi.com
SecurityWeek
Press · 14 Jul 2026, 07:00 · Microsoft Patches Record 622 Vulnerabilities, Including Two Exploited Zero-Days - SecurityWeek
CyberSecurityNews
Press · 14 Jul 2026, 07:00 · Massive Microsoft Patch Tuesday Update: 570 Vulnerabilities Fixed, Including 3 Zero-Days - CyberSecurityNews
The Hacker News
Press · 14 Jul 2026, 07:00 · Microsoft Patches Record 622 Flaws, Including Two Zero-Days Under Active Attack - The Hacker News
CyberScoop
Press · 14 Jul 2026, 07:00 · Microsoft discloses ‘the mother of all’ vulnerability loads, tripling June’s previous record - CyberScoop
Krebs on Security
Press · 14 Jul 2026, 07:00 · Microsoft Patches a Record 570 Security Flaws - Krebs on Security
Security Boulevard
Press · 14 Jul 2026, 07:00 · Microsoft’s July 2026 Patch Tuesday Addresses 569 CVEs (CVE-2026-56155, CVE-2026-56164) - Security Boulevard

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 0.0 · reality 8.2 (2026-11-02 15:14). The curve appears once the score changes.

Public exploit evidence

0

Public exploit entries / repo candidates

Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 7.8; EPSS 0.3%
Attention, last 30 days
0 distinct story titles; 0 press documents; 0 publisher domains.
Technical potential
local access, low privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 14:00:16.575960+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Added to the CISA KEV catalog
14 Jul 2026, 00:00
First press mention
14 Jul 2026, 07:00
Published
14 Jul 2026, 17:05
Latest press mention
31 Jul 2026, 07:00
Score calculated
05 Nov 2026, 14:00