CVE-2021-27633

HIGH

7.5

CVSS Score

Published: June 9, 2021 at 12:00 AM UTC

Updated: June 17, 2026 at 03:45 AM UTC

1 product affected across 1 vendorNetweaver Abap

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Severity

HIGH7.5

Exploit prediction

EPSS 2%

Description

SAP NetWeaver AS for ABAP (RFC Gateway), 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 - 7.22,8.04,7.49,7.53,7.73,7.77,7.81,7.82,7.83, 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 ThCPIC() causing the system to crash and rendering it unavailable. In this attack, no data in the system can be viewed or modified.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Netweaver Abap · SAP

95%

v < 7.22v < 7.22EXTv < 7.49v < 7.53v < 7.73v < 7.77v < 7.81v < 7.82v < 7.83v < 8.04< KERNEL - 7.22< KRNL32NUC - 7.22< KRNL64NUC - 7.22< KRNL64UC - 8.04kernel_7.22 kernel_7.49 kernel_7.53 kernel_7.73 kernel_8.04 krnl32nuc_7.22 krnl32nuc_7.22ext krnl64nuc_7.22 krnl64nuc_7.22ext krnl64nuc_7.49 krnl64uc_7.22 krnl64uc_7.22ext krnl64uc_7.49 krnl64uc_7.53 krnl64uc_7.73 krnl64uc_8.04

Affected range stops below 7.22, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.22EXT, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.49, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.53, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.73, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.77, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.81, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.82, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.83, so it looks safe — our inference, not a vendor statement

Affected range stops below 8.04, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Permissions RequiredVendor Advisory

Source: [email protected]

https://launchpad.support.sap.com/#/notes/3020209

x_refsource_MISCBroken LinkVendor Advisory

Source: [email protected]

https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=578125999

CVSS

7.5HIGH[email protected]

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-787

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