Auth bypass in SAP Netweaver Application Server Java
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 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.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.048 (91.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 91.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.047 · newest: 0.048 · change: +0.001
Affected products
- SAP Netweaver Application Server Java — versions 7.11, 7.20, 7.30
- SAP Se Netweaver As Java (P2p Cluster Communication) — versions < 7.11, < 7.20, < 7.30
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wiki.scn.sap.com/wiki/pages/viewpage.action (Vendor Advisory)
- launchpad.support.sap.com/ (Permissions Required, Vendor Advisory)
- seclists.org/fulldisclosure/2021/Jun/33 (mailing-list, Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/163166/SAP-Netweaver-JAVA-7.50-Missing-Authorizat… (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-26829?
- CVE-2020-26829 is a critical-severity vulnerability in SAP Netweaver Application Server Java, classified under Missing Authentication for Critical Function. CVSS score: 10.0/10. Published 2020-12-09.
- How severe is CVE-2020-26829?
- Critical severity. CVSS v3 base score is 10.0 out of 10.
- Is CVE-2020-26829 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.