Threats / Microsoft / CVE-2022-21971
CVE-2022-21971
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Microsoft Windows vulnerability
Microsoft Windows Runtime vulnerability allows remote code execution via an unspecified vector. Actively exploited in the wild with high EPSS score.
Verdict
Today item — known-exploited.
A remote code execution flaw in Windows Runtime poses significant risk due to active exploitation. Organizations should prioritize patching to prevent unauthorized system compromise and data exfiltration.
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
1 independent public report 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 2022-08-18).
Probability (EPSS)
EPSS 0.53655 — 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-824 Uninitialized Pointer Access — weakness family: Memory safety.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 craft a malicious input targeting the Windows Runtime vulnerability to trigger code execution on a target system.
Business
Attackers gain arbitrary code execution capability, enabling system takeover and lateral movement within enterprise networks.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I deliver the exploit through network-accessible Windows services or applications that process untrusted data.
Business
Compromised systems become entry points for data theft, malware deployment, and further infrastructure compromise.
3
Lateral reach — past segmentation narrative 3
Attacker
I establish persistent access and escalate privileges to move laterally across the organization.
Business
Incident response costs, operational disruption, and potential regulatory penalties from data exposure incidents result.
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