CVE-2026-59115Network attack vector

Privilege escalation via path traversal

Published Aug 6, 2026 · Updated Aug 25, 2026

Path traversal in SyncFabric in Microsoft Entra Provisioning Service allows remote authenticated users to gain higher privileges over a network. Microsoft has disclosed only that SyncFabric improperly neutralizes .../...// sequences in a pathname derived from authenticated input, allowing path resolution outside the intended directory boundary. Reachability requires valid access to the hosted provisioning service, and the public record does not disclose which internal resources become reachable or whether cross-tenant impact is possible.

CVSS severity9.9
Critical
EPSS probability0.77%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in SyncFabric in Microsoft Entra Provisioning Service allows remote authenticated users to gain higher privileges over a network. Microsoft has disclosed only that SyncFabric improperly neutralizes .../...// sequences in a pathname derived from authenticated input, allowing path resolution outside the intended directory boundary. Reachability requires valid access to the hosted provisioning service, and the public record does not disclose which internal resources become reachable or whether cross-tenant impact is possible.

The record

CVE
CVE-2026-59115
Published
Aug 6, 2026
Updated
Aug 25, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-35
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.9Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-35Path Traversal: '.../...//'

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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