CVE-2025-26658Network attack vector

Authenticated user impersonation via improper session management

Published Mar 11, 2025 · Updated Feb 26, 2026

Broken authentication in SAP Business One Service Layer 10.0 allows remote authenticated users to impersonate other users. SAP identifies improper session management as the cause but has not disclosed how one user's authenticated session becomes available to another user. Low-privilege access and considerable effort are required; successful impersonation grants the victim's privileges to read, modify, or create business data.

CVSS severity6.8
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Broken authentication in SAP Business One Service Layer 10.0 allows remote authenticated users to impersonate other users. SAP identifies improper session management as the cause but has not disclosed how one user's authenticated session becomes available to another user. Low-privilege access and considerable effort are required; successful impersonation grants the victim's privileges to read, modify, or create business data.

The record

CVE
CVE-2025-26658
Published
Mar 11, 2025
Updated
Feb 26, 2026
Vendor
SAP SE
Product
SAP Business One Service Layer
Classifications
CWE-384, T1539
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 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?

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

  1. Affected versionversion=B1_ON_HANA 10.0
  2. Affected versionversion=SAP-M-BO 10.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

SAP SE · SAP Business One Service Layerversion=B1_ON_HANA 10.0; version=SAP-M-BO 10.0

Published CVSS scores

6.8SAP SECVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/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.

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-384Session Fixation
T1539Steal Web Session Cookie

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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