Threats / Microsoft / CVE-2019-1385
CVE-2019-1385
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Microsoft Windows vulnerability
A privilege escalation vulnerability in Windows AppX Deployment Extensions allows improper access to system files through flawed privilege management.
Verdict
Today item, not a backlog item.
This vulnerability enables local attackers to escalate privileges and access protected system resources. Active exploitation and ransomware deployment have been observed, making remediation urgent for Windows systems.
01
Is it exploitable?
— the evidence, ranked above the scoreReported 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 2022-05-23), flagged for known ransomware use.
Probability (EPSS)
EPSS 0.03478 — 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-59 Link Following — weakness family: Path traversal / file.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 execute a local process with limited privileges on a Windows system.
Business
An attacker gains a foothold on the endpoint through initial compromise or user action.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I exploit the AppX Deployment Extensions privilege management flaw to escalate my access level.
Business
The attacker obtains system-level privileges, bypassing security boundaries designed to contain threats.
3
Lateral reach — past segmentation narrative 3
Attacker
I access protected system files and resources now available at elevated privilege.
Business
Critical system integrity is compromised, enabling lateral movement and persistence mechanisms.
4
Data at risk — exfiltration narrative 4
Attacker
I deploy ransomware or additional malicious payloads with system privileges.
Business
Operations are disrupted through encryption of business data or system unavailability.
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