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CVE-2026-66767— Memory Corruption vulnerability in SAP NetWeaver Application Server for ABAP and ABAP Platform

Quick assessment

Affected
SAP_SE SAP NetWeaver Application Server for ABAP and ABAP Platform
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SAP NetWeaver 的 ABAP 应用服务器和 ABAP 平台允许未经身份验证的用户发送一个精心构造的数据包，从而触发对先前缓存的用户请求进行重新处理。在特定的狭窄时间窗口条件下，攻击者可能会劫持其他用户的会话。如果成功利用该漏洞，将对应用程序的机密性和完整性产生高影响，而对可用性产生低影响。

CVSS 7.7 · High
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I. Basic Information for CVE-2026-66767

Vulnerability Information
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Vulnerability Title
Memory Corruption vulnerability in SAP NetWeaver Application Server for ABAP and ABAP Platform
Source: CVE Program / CVE List V5
Vulnerability Description
SAP NetWeaver Application Server for ABAP and ABAP Platform allows an unauthenticated user to send a specially crafted packet that triggers reprocessing of a previously buffered user request, potentially hijacking another user's session under narrow timing conditions. Successful exploitation could result in high impact on confidentiality and integrity, with low impact on availability of the application.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
整数下溢(超界折返)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
SAP_SE SAP NetWeaver Application Server for ABAP and ABAP Platform KRNL64NUC 7.22 -

II. Public POCs for CVE-2026-66767

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III. Intelligence Information for CVE-2026-66767

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Vendor Pages for CVE-2026-66767 (1)

Same Patch Batch · SAP_SE · 2026-09-08 · 17 CVEs total

CVE-2026-44756 10.0 CRITICAL Memory Corruption vulnerability in SAP Extended Passport (EPP) Processing
CVE-2026-58240 9.8 CRITICAL Missing Authentication check in SAP NetWeaver (Message Server)
CVE-2026-76969 9.4 CRITICAL Credential disclosure in multitenant applications using SAP Cloud Application Programming
CVE-2026-66768 9.0 CRITICAL Improper Access Control in SAP NetWeaver (SAP GUI for Java)
CVE-2026-76958 8.5 HIGH XML External Entity (XXE) Vulnerability in SAP Integration Suite
CVE-2026-76967 7.8 HIGH Insecure Deserialization in SAP NetWeaver Business Client
CVE-2026-76971 6.5 MEDIUM Server-Side Request Forgery in SAP Manufacturing Integration and Intelligence
CVE-2026-76968 6.5 MEDIUM Information Disclosure vulnerability in SAP Web Dispatcher, Internet Communication Manager
CVE-2026-44766 6.5 MEDIUM SQL Injection vulnerability in SAP S/4HANA (Intercompany Matching and Reconciliation)
CVE-2026-76959 4.6 MEDIUM Cross-Site Request Forgery (CSRF) vulnerability in SAP S/4HANA (Finance for Advanced Payme
CVE-2026-76977 4.3 MEDIUM Clickjacking vulnerability in SAPUI5(Frame Options Allowlist)
CVE-2026-76963 4.3 MEDIUM Missing Authorization Check in Application Server ABAP of SAP NetWeaver and ABAP Platform
CVE-2026-76962 4.3 MEDIUM Missing Authorization check in SAP S/4HANA (Manage Bank Chains app)
CVE-2026-76961 3.5 LOW Cross-Site Request Forgery (CSRF) vulnerability in SAP S/4HANA (Finance for Advanced Payme
CVE-2026-76960 3.5 LOW Cross-Site Request Forgery (CSRF) vulnerability in SAP S/4HANA (Finance for Advanced Payme
CVE-2026-58234 2.2 LOW Denial of Service vulnerability in SAP Process Integration (SOAP Adapter)

IV. Related Vulnerabilities

Same product: SAP NetWeaver Application Server for ABAP and ABAP Platform
Same vendor: SAP_SE
Same weakness: CWE-191

V. Comments for CVE-2026-66767

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