EUVD-2026-73798
GHSA-p65j-x5fg-fq3x
Severity by source
AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
DFS is network-reachable and requires low-privilege authentication (PR:L); use-after-free timing dependency justifies AC:H; impact is availability-only with no confidentiality or integrity effect.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
3DescriptionCVE.org
Use after free in Windows Distributed File System (DFS) allows an authorized attacker to deny service over a network.
AnalysisAI
Use-after-free in Windows Distributed File System (DFS) enables an authenticated network attacker to crash the DFS service, resulting in denial of file-sharing access across affected Windows client and server versions. The CVSS vector (AV:N/AC:H/PR:L) confirms network reachability but constrains exploitation to low-privilege authenticated accounts under high-complexity conditions. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid low-privilege account with network access to the target's DFS service (consistent with PR:L in the CVSS vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS base score of 5.3 (medium) reflects meaningful but bounded risk: the AV:N attack vector confirms network reachability, but AC:H rules out reliable automation, PR:L requires prior authentication, and impact is limited to availability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply Microsoft's security updates for CVE-2026-78446 through Windows Update, WSUS, or Microsoft Update Catalog. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-416 – Use After Free
View allSame technique Denial Of Service
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External POC / Exploit Code
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