What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-08 · updated 2026-09-09
• Weakness: CWE-191

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.

Affected products

• SAP_SE SAP NetWeaver Application Server for ABAP and ABAP Platform: KRNL64NUC 7.22, 7.22EXT, KRNL64UC 7.22, 7.53, 8.04, KERNEL 7.22 (+7)

References

• https://me.sap.com/notes/3757002
• https://url.sap/sapsecuritypatchday

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