Vulnerability

CVE-2025-33053

High· 8.8KEVEXPLOITCVSS8.8EPSS50%

.rules3/5

Microsoft Windows External Control of File Name or Path Vulnerability

Microsoft Windows contains an external control of file name or path vulnerability that could allow an attacker to execute code from a remote WebDAV location specified by the WorkingDirectory attribute of Internet Shortcut files.

Threat signal

100/100

Severe

Severity

high

CVSS

8.8

EPSS

50%

Active

KEV

CISA KEV — actively exploited

347d overdue

AffectedMicrosoft — Windows

Added to KEV

2025-06-10

Federal patch due (BOD 22-01)

2025-07-01

Required action (CISA verbatim)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Vendor advisory + references

CISA description: “Microsoft Windows contains an external control of file name or path vulnerability that could allow an attacker to execute code from a remote WebDAV location specified by the WorkingDirectory attribute of Internet Shortcut files.”

CVSS

v3.1Open in FIRST calculator →

8.8/ 10HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack VectorNetworkExploitable remotely over the internet — no local access needed.
Attack ComplexityLowNo special conditions — exploit works reliably.
Privileges RequiredNoneUnauthenticated — no credentials needed.
User InteractionRequiredRequires user action (click, file open, etc).
ScopeUnchangedImpact contained to the vulnerable component.
Confidentiality ImpactHighTotal disclosure of sensitive data.
Integrity ImpactHighTotal compromise of integrity — full data modification possible.
Availability ImpactHighTotal loss of availability — full DoS possible.

EPSS

Exploit prediction · 30-day horizonFIRST.org →

50.3%

probability of exploitation in next 30 days

p98

higher than 98% of all CVEs

3-day trend↑ 0pp

Statistically about to be weaponized — top-tier triage urgency.

Vendor VEX

No VEX statements published for CVE-2025-33053. Vendors publish VEX (Vulnerability Exploitability eXchange) to assert per-product whether a CVE is actually exploitable in their distribution.

SSVCAct

Active exploitation with total impact on essential/support systems

exploitation: active
automatable: yes
impact: total
mission: support

Lifecycle

2025-06-10Added to CISA KEVransomware: Unknown
2025-06-10Public exploit observedmetasploit
2025-06-10Published
2025-07-01Federal patch due (BOD 22-01)
2026-06-12Last modified1 source

No source-event history recorded yet. New revisions will appear here as ingestors re-fetch this CVE.