CVE-2023-37491

Improper Authorization check vulnerability in SAP Message Server

HIGH
8.8
CVSS Score
Published: August 8, 2023 at 12:46 AM UTC
Updated: June 17, 2026 at 06:08 AM UTC
1 product affected across 1 vendorMessage Server

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Severity
HIGH8.8
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

The ACL (Access Control List) of SAP Message Server - versions KERNEL 7.22, KERNEL 7.53, KERNEL 7.54, KERNEL 7.77, RNL64UC 7.22, RNL64UC 7.22EXT, RNL64UC 7.53, KRNL64NUC 7.22, KRNL64NUC 7.22EXT, can be bypassed in certain conditions, which may enable an authenticated malicious user to enter the network of the SAP systems served by the attacked SAP Message server. This may lead to unauthorized read and write of data as well as rendering the system unavailable.

Affected

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

KERNEL 7.22KERNEL 7.53KERNEL 7.54KERNEL 7.77KRNL64NUC 7.22KRNL64NUC 7.22EXTRNL64UC 7.22RNL64UC 7.22EXTRNL64UC 7.53kernel_7.22kernel_7.53kernel_7.54kernel_7.77krnl64nuc_7.22krnl64nuc_7.22exrnl64uc_7.22rnl64uc_7.22extrnl64uc_7.53

Remediation

No guide yet

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

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

Quick Info

StatusMODIFIED
CWE
CWE-863

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