CVE-2025-42943Public exploitNetwork attack vector

NTLM hash disclosure via UNC path authentication

Published Aug 12, 2025 · Updated Aug 12, 2025

Information disclosure in SAP GUI for Windows 8.00 allows remote authenticated users to expose NTLM hashes through UNC paths. Specific ABAP frontend services pass attacker-supplied UNC paths to Windows, which performs automatic NTLM authentication to the referenced network host. The attacker needs developer authorization on an Application Server ABAP, and a victim must execute the changed code in the GUI; the consequence is disclosure of hashed credentials.

CVSS severity4.5
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in SAP GUI for Windows 8.00 allows remote authenticated users to expose NTLM hashes through UNC paths. Specific ABAP frontend services pass attacker-supplied UNC paths to Windows, which performs automatic NTLM authentication to the referenced network host. The attacker needs developer authorization on an Application Server ABAP, and a victim must execute the changed code in the GUI; the consequence is disclosure of hashed credentials.

The record

CVE
CVE-2025-42943
Published
Aug 12, 2025
Updated
Aug 12, 2025
Vendor
SAP SE
Product
SAP GUI for Windows
Classifications
CWE-250, T1187
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=BC-FES-GUI 8.00

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

SAP SE · SAP GUI for Windowsversion=BC-FES-GUI 8.00

Published CVSS scores

4.5SAP SECVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:N/A:N

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.

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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-250Execution with Unnecessary Privileges
T1187Forced Authentication

Public exploit references

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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