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Threats / Microsoft / CVE-2025-33053
CVE-2025-33053 · EUVD no mirror located · GCVE no mirror located Verified 2026-06-22

Microsoft Windows vulnerability

Microsoft Windows allows remote code execution through Internet Shortcut files with malicious WorkingDirectory attributes pointing to WebDAV locations, enabling attackers to execute arbitrary code.

Verdict

Today item — known-exploited.

An attacker can craft a malicious Internet Shortcut file that specifies a remote WebDAV path in its WorkingDirectory attribute, causing Windows to execute code from that attacker-controlled location when the shortcut is opened.

CISA KEV Yes · 2025-06-103EPSS 0.81558 (verify live)4Exploit Public PoC5
01

Is it exploitable?

— the evidence, ranked above the score
Exploit 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
15 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 2025-06-10).
CISA KEV ↗Confirmed
Probability (EPSS)
EPSS 0.81558 — 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.
NVD ↗Reported
Weakness (CWE)
Mapped to CWE-73 CWE-73 — weakness family: Path traversal / file.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
NVD ↗Reported
WeaknessCWE-73 · CWE-73Path traversal / file
02

Who’s exploiting it?

— attribution turns risk into urgency
Attribution 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 board
1

Front door — unauthenticated access narrative 1

Attacker
I craft an Internet Shortcut file with a WorkingDirectory attribute pointing to my WebDAV server.
Business
Employees receive seemingly benign shortcut files via email or file shares.
2

Keys to the kingdom — privilege/identity takeover narrative 2

Attacker
I distribute the shortcut file to target users through social engineering or compromised file repositories.
Business
Users unknowingly open the shortcut, trusting its apparent legitimacy.
3

Lateral reach — past segmentation narrative 3

Attacker
Windows resolves the WorkingDirectory path to my WebDAV server and executes my malicious payload.
Business
Arbitrary code runs with the privileges of the user who opened the shortcut, compromising the system.
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

Coverage & confidence

— what we know, and what we don’t

Established (cited)

  • KEV listing (CISA)
  • EPSS probability (FIRST)
  • Public PoC available (VulnCheck)
  • 15 reported-exploitation source(s)
  • CWE weakness mapping (NVD)
  • Public exploit availability
  • Catalogued by microsoft (CNA)
  • Coverage gaps — stated, not hidden

  • No EUVD / GCVE mirror in feed — single-authority dependency for the identifier.
  • EPSS & exposure are time-varying; verify live at the source.
  • Threat-actor attribution not established from feed data — absence of a name is not absence of compromise.
  • No finder/reporter credit recorded in the public CVE entry — the work behind this find is unattributed.
  • Disclosure & credit2
    Catalogued by microsoftCNA
    Credited with finding itNo finder named in the public CVE record — the work behind this find is unattributed.