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Vulnerability record · CVE-2020-26829 · published 9 December 2020

CVE-2020-26829: Sap netweaver application server java missing authentication for critical function vulnerability

Sap · Netweaver Application Server Java

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.

10.0 CVSS 3.1 Critical EPSS 4.8% · top 8.4% CWE-306 · Missing authentication for critical function
10.0CVSS 3.1 base score, v2 9.0
4.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

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.

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

Affected products

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

References

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

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2020-26829), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.