Threats / Microsoft / CVE-2026-20805
CVE-2026-20805
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Microsoft Windows vulnerability
Microsoft Windows Desktop Window Manager information disclosure vulnerability allows authorized attackers to access sensitive data locally.
Verdict
Today item — known-exploited.
An authorized local attacker can exploit this information disclosure flaw in Windows Desktop Window Manager to read sensitive information that should be restricted. Active exploitation in the wild indicates practical threat.
01
Is it exploitable?
— the evidence, ranked above the scoreExploit available
Public proof-of-concept exploit code is cataloged for this vulnerability.We link the existence of the exploit; we do not host or redistribute payloads.
Reported exploitation
5 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-01-13).
Probability (EPSS)
EPSS 0.05028 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Microsoft, Windows. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-200 Information Exposure — weakness family: Authorization / access control.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I gain local system access as an authorized user with standard privileges.
Business
Insider threat or compromised user account creates initial foothold on Windows systems.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I exploit the Window Manager flaw to read memory or files containing sensitive data not normally accessible to my privilege level.
Business
Confidential information such as credentials, tokens, or user data becomes exposed to unauthorized disclosure.
3
Lateral reach — past segmentation narrative 3
Attacker
I extract disclosed information for lateral movement, privilege escalation, or external exfiltration.
Business
Information disclosure escalates into broader compromise, enabling further attacks across the environment.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05