Threats / Microsoft / CVE-2022-34713
CVE-2022-34713
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Microsoft Windows vulnerability
A remote code execution vulnerability in Microsoft Windows MSDT allows attackers to execute arbitrary code when MSDT is invoked via URL protocol from a calling application.
Verdict
Today item — known-exploited.
This vulnerability enables unauthenticated remote code execution through URL-based protocol invocation of the Diagnostics Tool. Active exploitation in the wild demonstrates immediate threat severity despite low EPSS score, likely due to exploitation requiring user interaction or specific delivery me
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
4 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 2022-08-09).
Probability (EPSS)
EPSS 0.6798 — 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.
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 craft a malicious document or link that triggers MSDT via URL protocol handler when opened or clicked by a target user.
Business
End users become infection vectors; malware gains initial system access without requiring security awareness or technical sophistication from victims.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I execute arbitrary code with the privileges of the user who opened the malicious content, establishing persistence or lateral movement capability.
Business
Attackers gain foothold for ransomware deployment, data exfiltration, or supply chain compromise affecting downstream customers and partners.
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