CVE-2025-59711Public exploitNetwork attack vector

Authenticated file overwrite and authentication coercion via uploads

Published Apr 3, 2026 · Updated Apr 3, 2026

Path traversal in Kovai.co BizTalk360 before 11.6.3963.2611 allows remote authenticated users to write files outside upload directories. AnalyticsDataBusinessService.UploadFile passes the user-controlled fileName directly as the second Path.Combine argument, allowing relative, absolute, or UNC paths to replace the intended destination. Any authenticated domain account can reach the IIS-hosted WCF service on a domain-joined Windows server, enabling arbitrary file writes as the privileged service account or forced authentication to a remote share.

CVSS severity8.3
High
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Path traversal in Kovai.co BizTalk360 before 11.6.3963.2611 allows remote authenticated users to write files outside upload directories. AnalyticsDataBusinessService.UploadFile passes the user-controlled fileName directly as the second Path.Combine argument, allowing relative, absolute, or UNC paths to replace the intended destination. Any authenticated domain account can reach the IIS-hosted WCF service on a domain-joined Windows server, enabling arbitrary file writes as the privileged service account or forced authentication to a remote share.

The record

CVE
CVE-2025-59711
Published
Apr 3, 2026
Updated
Apr 3, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-22, T1187, T1105
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

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

8.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

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 exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1187Forced Authentication
T1105Ingress Tool Transfer

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo