CVE-2020-26829

Name: CVE-2020-26829
Creator: NVD / NIST
Published: 2020-12-09T17:15:31.057+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 10/10EPSS 4.71%

Last modified Jun 17, 2026

CVE-2020-26829 is a critical-severity vulnerability rated 10/10 on the CVSS scale. SAP NetWeaver AS JAVA (P2P Cluster Communication), versions - 7.11, 7.20, 7.30, 7.31, 7.40, 7.50, allows arbitrary connections from processes because of missing authentication check, that are outside the cluster and even outside the network segment dedicated for the internal cluster communication. As result, an unauthenticated attacker can invoke certain functions that would otherwise be restricted to system administrators only, including access to system administration functions or shutting down the system completely.. EPSS estimates a 4.71% chance of exploitation in the next 30 days.

Description

SAP NetWeaver AS JAVA (P2P Cluster Communication), versions - 7.11, 7.20, 7.30, 7.31, 7.40, 7.50, allows arbitrary connections from processes because of missing authentication check, that are outside the cluster and even outside the network segment dedicated for the internal cluster communication. As result, an unauthenticated attacker can invoke certain functions that would otherwise be restricted to system administrators only, including access to system administration functions or shutting down the system completely.

Metrics

CVSS 3.1

10/10

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

EPSS Probability

4.71%

90.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-306

Affected Software

Vendor	Product	Versions
Sap	Netweaver Application Server Java	7.11
Sap	Netweaver Application Server Java	7.20
Sap	Netweaver Application Server Java	7.30
Sap	Netweaver Application Server Java	7.31
Sap	Netweaver Application Server Java	7.40
Sap	Netweaver Application Server Java	7.50

References

http://packetstormsecurity.com/files/163166/SAP-Netweaver-JAVA-7.50-Missing-Authorization.htmlThird Party Advisory
http://seclists.org/fulldisclosure/2021/Jun/33Mailing List, Third Party Advisory
https://launchpad.support.sap.com/#/notes/2974774Permissions Required, Vendor Advisory
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=564757079Vendor Advisory
http://packetstormsecurity.com/files/163166/SAP-Netweaver-JAVA-7.50-Missing-Authorization.htmlThird Party Advisory
http://seclists.org/fulldisclosure/2021/Jun/33Mailing List, Third Party Advisory
https://launchpad.support.sap.com/#/notes/2974774Permissions Required, Vendor Advisory
https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=564757079Vendor Advisory

Timeline

Published: Dec 9, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-26829?

How severe is CVE-2020-26829?

CVE-2020-26829 has a CVSS score of 10/10 (CRITICAL severity). The EPSS model estimates a 4.71% probability of exploitation in the next 30 days.

How do I fix CVE-2020-26829?

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-2020-26829?

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

Scan your code now

Source: NVD / NIST