Vulnerability Details CVE-2026-66776
SAP Approuter does not consistently enforce integrity verification on certain session-related request headers under specific conditions. An attacker with low privileges could send a specially crafted request that bypasses the integrity check and loads another user's session context. Successful exploitation requires the attacker to have previously observed matching session values out-of-band, which makes the attack complex to execute. This could result in a high impact on confidentiality and a low impact on integrity. There is no impact on availability.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 3.5%
CVSS Severity
CVSS v3 Score 5.9
Products affected by CVE-2026-66776
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cpe:2.3:a:sap:approuter:10.0.0
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cpe:2.3:a:sap:approuter:10.1.0
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cpe:2.3:a:sap:approuter:10.10.0
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cpe:2.3:a:sap:approuter:10.10.1
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cpe:2.3:a:sap:approuter:10.10.2
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cpe:2.3:a:sap:approuter:10.10.3
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cpe:2.3:a:sap:approuter:10.10.4
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cpe:2.3:a:sap:approuter:10.11.0
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cpe:2.3:a:sap:approuter:10.11.1
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cpe:2.3:a:sap:approuter:10.11.2
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cpe:2.3:a:sap:approuter:10.11.3
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cpe:2.3:a:sap:approuter:10.12.0
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cpe:2.3:a:sap:approuter:10.13.0
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cpe:2.3:a:sap:approuter:10.13.1
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cpe:2.3:a:sap:approuter:10.13.2
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cpe:2.3:a:sap:approuter:10.14.0
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cpe:2.3:a:sap:approuter:10.14.1
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cpe:2.3:a:sap:approuter:10.14.2
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cpe:2.3:a:sap:approuter:10.15.0
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cpe:2.3:a:sap:approuter:10.15.1
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cpe:2.3:a:sap:approuter:10.15.2
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cpe:2.3:a:sap:approuter:10.15.3
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cpe:2.3:a:sap:approuter:10.15.4
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cpe:2.3:a:sap:approuter:10.2.0
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cpe:2.3:a:sap:approuter:10.3.0
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cpe:2.3:a:sap:approuter:10.4.0
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cpe:2.3:a:sap:approuter:10.4.1
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cpe:2.3:a:sap:approuter:10.4.2
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cpe:2.3:a:sap:approuter:10.4.3
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cpe:2.3:a:sap:approuter:10.5.0
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cpe:2.3:a:sap:approuter:10.5.1
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cpe:2.3:a:sap:approuter:10.6.0
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cpe:2.3:a:sap:approuter:10.6.1
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cpe:2.3:a:sap:approuter:10.7.1
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cpe:2.3:a:sap:approuter:10.8.0
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cpe:2.3:a:sap:approuter:10.8.1
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cpe:2.3:a:sap:approuter:10.8.2
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cpe:2.3:a:sap:approuter:10.9.0
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cpe:2.3:a:sap:approuter:10.9.1
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cpe:2.3:a:sap:approuter:10.9.2
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cpe:2.3:a:sap:approuter:11.0.0
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cpe:2.3:a:sap:approuter:11.0.1
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cpe:2.3:a:sap:approuter:11.1.0
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cpe:2.3:a:sap:approuter:11.2.0
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cpe:2.3:a:sap:approuter:11.2.1
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cpe:2.3:a:sap:approuter:11.3.0
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cpe:2.3:a:sap:approuter:11.3.1
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cpe:2.3:a:sap:approuter:11.3.2
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cpe:2.3:a:sap:approuter:11.3.3
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cpe:2.3:a:sap:approuter:11.3.4
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cpe:2.3:a:sap:approuter:11.4.0
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cpe:2.3:a:sap:approuter:11.4.1
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cpe:2.3:a:sap:approuter:11.5.0
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cpe:2.3:a:sap:approuter:11.5.1
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cpe:2.3:a:sap:approuter:11.6.0
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cpe:2.3:a:sap:approuter:11.6.1
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cpe:2.3:a:sap:approuter:12.0.0
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cpe:2.3:a:sap:approuter:12.0.1
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cpe:2.3:a:sap:approuter:12.0.2
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cpe:2.3:a:sap:approuter:12.0.3
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cpe:2.3:a:sap:approuter:13.0.0
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cpe:2.3:a:sap:approuter:13.0.1
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cpe:2.3:a:sap:approuter:13.0.2
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cpe:2.3:a:sap:approuter:13.1.0
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cpe:2.3:a:sap:approuter:13.1.1
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cpe:2.3:a:sap:approuter:14.0.0
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cpe:2.3:a:sap:approuter:14.1.0
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cpe:2.3:a:sap:approuter:14.1.1
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cpe:2.3:a:sap:approuter:14.1.2
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cpe:2.3:a:sap:approuter:14.2.0
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cpe:2.3:a:sap:approuter:14.2.1
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cpe:2.3:a:sap:approuter:14.3.0
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cpe:2.3:a:sap:approuter:14.3.1
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cpe:2.3:a:sap:approuter:14.3.2
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cpe:2.3:a:sap:approuter:14.3.3
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cpe:2.3:a:sap:approuter:14.3.4
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cpe:2.3:a:sap:approuter:14.4.0
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cpe:2.3:a:sap:approuter:14.4.1
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cpe:2.3:a:sap:approuter:14.4.2
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cpe:2.3:a:sap:approuter:14.4.3
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cpe:2.3:a:sap:approuter:15.0.0
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cpe:2.3:a:sap:approuter:16.0.0
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cpe:2.3:a:sap:approuter:16.0.1
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cpe:2.3:a:sap:approuter:16.0.2
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cpe:2.3:a:sap:approuter:16.1.0
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cpe:2.3:a:sap:approuter:16.1.1
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cpe:2.3:a:sap:approuter:16.2.0
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cpe:2.3:a:sap:approuter:16.2.1
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cpe:2.3:a:sap:approuter:16.3.0
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cpe:2.3:a:sap:approuter:16.4.0
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cpe:2.3:a:sap:approuter:16.4.1
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cpe:2.3:a:sap:approuter:16.4.2
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cpe:2.3:a:sap:approuter:16.5.0
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cpe:2.3:a:sap:approuter:16.5.1
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cpe:2.3:a:sap:approuter:16.5.2
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cpe:2.3:a:sap:approuter:16.6.0
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cpe:2.3:a:sap:approuter:16.6.1
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cpe:2.3:a:sap:approuter:16.6.2
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cpe:2.3:a:sap:approuter:16.7.0
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cpe:2.3:a:sap:approuter:16.7.1
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cpe:2.3:a:sap:approuter:16.7.2
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cpe:2.3:a:sap:approuter:16.7.3
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cpe:2.3:a:sap:approuter:16.8.0
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cpe:2.3:a:sap:approuter:16.8.1
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cpe:2.3:a:sap:approuter:16.8.2
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cpe:2.3:a:sap:approuter:16.9.0
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cpe:2.3:a:sap:approuter:17.0.0
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cpe:2.3:a:sap:approuter:17.1.0
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cpe:2.3:a:sap:approuter:18.0.0
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cpe:2.3:a:sap:approuter:18.0.1
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cpe:2.3:a:sap:approuter:18.0.2
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cpe:2.3:a:sap:approuter:18.0.3
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cpe:2.3:a:sap:approuter:19.0.0
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cpe:2.3:a:sap:approuter:19.0.1
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cpe:2.3:a:sap:approuter:19.0.2
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cpe:2.3:a:sap:approuter:19.0.3
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cpe:2.3:a:sap:approuter:19.0.4
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cpe:2.3:a:sap:approuter:2.10.0
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cpe:2.3:a:sap:approuter:2.6.1
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cpe:2.3:a:sap:approuter:2.7.0
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cpe:2.3:a:sap:approuter:2.7.1
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cpe:2.3:a:sap:approuter:2.9.1
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cpe:2.3:a:sap:approuter:20.0.0
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cpe:2.3:a:sap:approuter:20.0.1
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cpe:2.3:a:sap:approuter:20.1.0
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cpe:2.3:a:sap:approuter:20.10.0
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cpe:2.3:a:sap:approuter:20.2.0
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cpe:2.3:a:sap:approuter:20.3.0
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cpe:2.3:a:sap:approuter:20.3.1
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cpe:2.3:a:sap:approuter:20.4.0
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cpe:2.3:a:sap:approuter:20.5.0
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cpe:2.3:a:sap:approuter:20.5.1
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cpe:2.3:a:sap:approuter:20.5.2
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cpe:2.3:a:sap:approuter:20.5.3
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cpe:2.3:a:sap:approuter:20.5.4
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cpe:2.3:a:sap:approuter:20.6.0
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cpe:2.3:a:sap:approuter:20.6.1
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cpe:2.3:a:sap:approuter:20.7.0
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cpe:2.3:a:sap:approuter:20.7.1
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cpe:2.3:a:sap:approuter:20.8.0
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cpe:2.3:a:sap:approuter:20.8.1
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cpe:2.3:a:sap:approuter:20.8.2
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cpe:2.3:a:sap:approuter:20.8.3
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cpe:2.3:a:sap:approuter:20.8.4
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cpe:2.3:a:sap:approuter:20.8.5
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cpe:2.3:a:sap:approuter:20.8.6
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cpe:2.3:a:sap:approuter:20.8.7
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cpe:2.3:a:sap:approuter:20.8.8
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cpe:2.3:a:sap:approuter:20.9.0
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cpe:2.3:a:sap:approuter:21.0.0
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cpe:2.3:a:sap:approuter:21.1.0
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cpe:2.3:a:sap:approuter:21.2.0
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cpe:2.3:a:sap:approuter:21.2.1
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cpe:2.3:a:sap:approuter:21.3.0
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cpe:2.3:a:sap:approuter:21.4.0
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cpe:2.3:a:sap:approuter:21.5.0
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cpe:2.3:a:sap:approuter:22.0.0
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cpe:2.3:a:sap:approuter:22.0.1
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cpe:2.3:a:sap:approuter:22.0.2
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cpe:2.3:a:sap:approuter:22.0.3
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cpe:2.3:a:sap:approuter:3.0.1
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cpe:2.3:a:sap:approuter:4.0.0
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cpe:2.3:a:sap:approuter:4.0.1
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cpe:2.3:a:sap:approuter:5.0.0
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cpe:2.3:a:sap:approuter:5.1.0
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cpe:2.3:a:sap:approuter:5.2.0
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cpe:2.3:a:sap:approuter:5.2.1
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cpe:2.3:a:sap:approuter:5.3.0
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cpe:2.3:a:sap:approuter:5.4.1
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cpe:2.3:a:sap:approuter:5.4.2
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cpe:2.3:a:sap:approuter:5.5.0
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cpe:2.3:a:sap:approuter:5.6.1
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cpe:2.3:a:sap:approuter:8.1.0
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cpe:2.3:a:sap:approuter:8.1.3
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cpe:2.3:a:sap:approuter:8.2.0
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cpe:2.3:a:sap:approuter:8.2.1
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cpe:2.3:a:sap:approuter:8.2.2
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cpe:2.3:a:sap:approuter:8.3.0
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cpe:2.3:a:sap:approuter:8.3.1
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cpe:2.3:a:sap:approuter:8.4.0
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cpe:2.3:a:sap:approuter:8.4.1
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cpe:2.3:a:sap:approuter:8.5.0
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cpe:2.3:a:sap:approuter:8.5.1
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cpe:2.3:a:sap:approuter:8.5.2
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cpe:2.3:a:sap:approuter:8.5.3
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cpe:2.3:a:sap:approuter:8.5.4
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cpe:2.3:a:sap:approuter:8.5.5
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cpe:2.3:a:sap:approuter:8.6.0
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cpe:2.3:a:sap:approuter:8.6.1
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cpe:2.3:a:sap:approuter:9.0.0
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cpe:2.3:a:sap:approuter:9.0.1
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cpe:2.3:a:sap:approuter:9.0.2
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cpe:2.3:a:sap:approuter:9.1.0
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cpe:2.3:a:sap:approuter:9.2.0
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cpe:2.3:a:sap:approuter:9.3.0
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cpe:2.3:a:sap:approuter:9.4.0