CVE-2021-27603

Name: CVE-2021-27603
Creator: NVD / NIST
Published: 2021-04-13T19:15:15.397+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.86%

Last modified Jun 17, 2026

CVE-2021-27603 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. An RFC enabled function module SPI_WAIT_MILLIS in SAP NetWeaver AS ABAP, versions - 731, 740, 750, allows to keep a work process busy for any length of time. An attacker could call this function module multiple times to block all work processes thereby causing Denial of Service and affecting the Availability of the SAP system.. EPSS estimates a 0.86% chance of exploitation in the next 30 days.

Description

An RFC enabled function module SPI_WAIT_MILLIS in SAP NetWeaver AS ABAP, versions - 731, 740, 750, allows to keep a work process busy for any length of time. An attacker could call this function module multiple times to block all work processes thereby causing Denial of Service and affecting the Availability of the SAP system.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.86%

53.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Sap	Netweaver Application Server Abap	731
Sap	Netweaver Application Server Abap	740
Sap	Netweaver Application Server Abap	750

References

https://launchpad.support.sap.com/#/notes/3028729Permissions Required
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=573801649Vendor Advisory
https://launchpad.support.sap.com/#/notes/3028729Permissions Required
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=573801649Vendor Advisory

Timeline

Published: Apr 13, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-27603?

How severe is CVE-2021-27603?

CVE-2021-27603 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.86% probability of exploitation in the next 30 days.

How do I fix CVE-2021-27603?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-27603?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST