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CVE-2021-27632

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-06-09 · updated 2026-06-17
• Weakness: CWE-476

Description

SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server), versions - KRNL32NUC - 7.22,7.22EXT, KRNL64NUC - 7.22,7.22EXT,7.49, KRNL64UC - 8.04,7.22,7.22EXT,7.49,7.53,7.73, KERNEL - 7.22,8.04,7.49,7.53,7.73, allows an unauthenticated attacker without specific knowledge of the system to send a specially crafted packet over a network which will trigger an internal error in the system due to improper input validation in method EnqConvUniToSrvReq() causing the system to crash and rendering it unavailable. In this attack, no data in the system can be viewed or modified.

Affected products

• SAP SE SAP NetWeaver ABAP Server and ABAP Platform (Enqueue Server): kernel_7.22, kernel_7.49, kernel_7.53, kernel_7.73, kernel_7.77, kernel_7.81 (+14)

References

• https://launchpad.support.sap.com/#/notes/3020104
• https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999
• https://launchpad.support.sap.com/#/notes/3020104
• https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999

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