CVE-2026-23687 | XML Signature Wrapping in SAP NetWeaver AS ABAP and ABAP Platform

SAP NetWeaver Application Server ABAP and ABAP Platform allows an authenticated attacker with normal privileges to obtain a valid signed message and send modified signed XML documents to the verifier. This may result in acceptance of tampered identity information, unauthorized access to sensitive user data and potential disruption of normal system usage.

Published: 2026-02-10 Last update: 2026-06-09 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-23687 is rated Moderate Risk (40.1/100): CVSS High severity, with low exploitation likelihood (EPSS 0.05%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-23687

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-02-10 — 0.05% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-23687

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]

Weakness enumeration for CVE-2026-23687

GitHub Security Advisory for CVE-2026-23687

GHSA-464m-h7w2-29w7 · Severity: high — SAP NetWeaver Application Server ABAP and ABAP Platform allows an authenticated attacker with...

Affected software / configurations for CVE-2026-23687

Vendor Product Version Raw CPE
sap sap_basis 700 cpe:2.3:a:sap:sap_basis:700:*:*:*:*:*:*:*
sap sap_basis 701 cpe:2.3:a:sap:sap_basis:701:*:*:*:*:*:*:*
sap sap_basis 702 cpe:2.3:a:sap:sap_basis:702:*:*:*:*:*:*:*
sap sap_basis 731 cpe:2.3:a:sap:sap_basis:731:*:*:*:*:*:*:*
sap sap_basis 740 cpe:2.3:a:sap:sap_basis:740:*:*:*:*:*:*:*
sap sap_basis 750 cpe:2.3:a:sap:sap_basis:750:*:*:*:*:*:*:*
sap sap_basis 751 cpe:2.3:a:sap:sap_basis:751:*:*:*:*:*:*:*
sap sap_basis 752 cpe:2.3:a:sap:sap_basis:752:*:*:*:*:*:*:*
sap sap_basis 753 cpe:2.3:a:sap:sap_basis:753:*:*:*:*:*:*:*
sap sap_basis 754 cpe:2.3:a:sap:sap_basis:754:*:*:*:*:*:*:*
sap sap_basis 755 cpe:2.3:a:sap:sap_basis:755:*:*:*:*:*:*:*
sap sap_basis 756 cpe:2.3:a:sap:sap_basis:756:*:*:*:*:*:*:*
sap sap_basis 757 cpe:2.3:a:sap:sap_basis:757:*:*:*:*:*:*:*
sap sap_basis 758 cpe:2.3:a:sap:sap_basis:758:*:*:*:*:*:*:*
sap sap_basis 804 cpe:2.3:a:sap:sap_basis:804:*:*:*:*:*:*:*
sap sap_basis 916 cpe:2.3:a:sap:sap_basis:916:*:*:*:*:*:*:*
sap sap_basis 917 cpe:2.3:a:sap:sap_basis:917:*:*:*:*:*:*:*
sap sap_basis 918 cpe:2.3:a:sap:sap_basis:918:*:*:*:*:*:*:*

References for CVE-2026-23687

cvelogic Threat Intelligence