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Vulnerability record · CVE-2023-33987 · published 11 July 2023

CVE-2023-33987: Sap web dispatcher http request smuggling vulnerability

Sap · Web Dispatcher

An unauthenticated attacker in SAP Web Dispatcher - versions WEBDISP 7.49, WEBDISP 7.53, WEBDISP 7.54, WEBDISP 7.77, WEBDISP 7.81, WEBDISP 7.85, WEBDISP 7.88, WEBDISP 7.89, WEBDISP 7.90, KERNEL 7.49, KERNEL 7.53, KERNEL 7.54 KERNEL 7.77, KERNEL 7.81, KERNEL 7.85, KERNEL 7.88, KERNEL 7.89, KERNEL 7.90, KRNL64NUC 7.49, KRNL64UC 7.49, KRNL64UC 7.53, HDB 2.00, XS_ADVANCED_RUNTIME 1.00, SAP_EXTENDED_APP_SERVICES 1, can submit a malicious crafted request over a network to a front-end server which may, over several attempts, result in a back-end server confusing the boundaries of malicious and legitimate messages. This can result in the back-end server executing a malicious payload which can be used to read or modify information on the server or make it temporarily unavailable.

9.4 CVSS 3.1 Critical EPSS 0.69% · top 49.1% CWE-444 · HTTP request smuggling
9.4CVSS 3.1 base score
0.69%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

An unauthenticated attacker in SAP Web Dispatcher - versions WEBDISP 7.49, WEBDISP 7.53, WEBDISP 7.54, WEBDISP 7.77, WEBDISP 7.81, WEBDISP 7.85, WEBDISP 7.88, WEBDISP 7.89, WEBDISP 7.90, KERNEL 7.49, KERNEL 7.53, KERNEL 7.54 KERNEL 7.77, KERNEL 7.81, KERNEL 7.85, KERNEL 7.88, KERNEL 7.89, KERNEL 7.90, KRNL64NUC 7.49, KRNL64UC 7.49, KRNL64UC 7.53, HDB 2.00, XS_ADVANCED_RUNTIME 1.00, SAP_EXTENDED_APP_SERVICES 1, can submit a malicious crafted request over a network to a front-end server which may, over several attempts, result in a back-end server confusing the boundaries of malicious and legitimate messages. This can result in the back-end server executing a malicious payload which can be used to read or modify information on the server or make it temporarily unavailable.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://me.sap.com/notes/3233899 Permissions Required
https://www.sap.com/documents/2022/02/fa865ea4-167e-0010-bca6-c68f7e60039b.html Vendor Advisory
https://me.sap.com/notes/3233899 Permissions Required
https://www.sap.com/documents/2022/02/fa865ea4-167e-0010-bca6-c68f7e60039b.html Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2022-22536SAP NetWeaver and Web Dispatcher HTTP request smugglingSAP NetWeaver Application Server ABAP, NetWeaver Application Server Java, ABAP Platform, Content Server 7.53 and Web Dispatcher mishandle HTTP reques…KEVEPSS 98%analysed9.8CVE-2023-40309Sap commoncryptolib incorrect authorization vulnerabilitySAP CommonCryptoLib does not perform necessary authentication checks, which may result in missing or wrong authorization checks for an authenticated …EPSS 0.88%9.4CVE-2023-35871Sap web dispatcher out-of-bounds write vulnerabilityThe SAP Web Dispatcher - versions WEBDISP 7.53, WEBDISP 7.54, WEBDISP 7.77, WEBDISP 7.85, WEBDISP 7.89, WEBDISP 7.91, WEBDISP 7.92, WEBDISP 7.93, KER…EPSS 0.60%9.4CVE-2021-38162Sap web dispatcher http request smuggling vulnerabilitySAP Web Dispatcher versions - 7.49, 7.53, 7.77, 7.81, KRNL64NUC - 7.22, 7.22EXT, 7.49, KRNL64UC -7.22, 7.22EXT, 7.49, 7.53, KERNEL - 7.22, 7.49, 7.53…EPSS 2.7%7.5CVE-2023-40308Sap commoncryptolib out-of-bounds write vulnerabilitySAP CommonCryptoLib allows an unauthenticated attacker to craft a request, which when submitted to an open port causes a memory corruption error in a…EPSS 0.75%7.5CVE-2022-28772Sap netweaver stack-based buffer overflow vulnerabilityBy overlong input values an attacker may force overwrite of the internal program stack in SAP Web Dispatcher - versions 7.53, 7.77, 7.81, 7.85, 7.86,…EPSS 1.4%7.5CVE-2022-28773Sap netweaver vulnerabilityDue to an uncontrolled recursion in SAP Web Dispatcher and SAP Internet Communication Manager, the application may crash, leading to denial of servic…EPSS 1.5%6.3CVE-2024-33005Sap netweaver abap missing authorization vulnerabilityDue to the missing authorization checks in the local systems, the admin users of SAP Web Dispatcher, SAP NetWeaver Application Server (ABAP and Java)…EPSS 0.21%

Source: NIST National Vulnerability Database (record CVE-2023-33987), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.