CVE-2026-66767

SAP NetWeaver Application Server for ABAP and ABAP Platform allows an unauthenticated user to send a specially crafted packet that triggers reprocessing of a previously buffered user request, potentially hijacking another user's session under narrow timing conditions. Successful exploitation could result in high impact on confidentiality and integrity, with low impact on availability of the application.

CVSS v3 7.7 HIGH

7.7^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.5

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://me.sap.com/notes/3757002
https://url.sap/sapsecuritypatchday

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-08 01:17

Updated : 2026-09-09 05:17

NVD link : CVE-2026-66767

Mitre link : CVE-2026-66767

CVE.ORG link : CVE-2026-66767

JSON object : View

Products Affected

No product.

CWE

CWE-191

Integer Underflow (Wrap or Wraparound)

{"id": "CVE-2026-66767", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-66767", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-09-08T00:00:00+00:00"}}], "cvssMetricV31": [{"type": "Secondary", "source": "cna@sap.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.7, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.5, "exploitabilityScore": 2.2}]}, "affected": [{"source": "cna@sap.com", "affectedData": [{"vendor": "SAP_SE", "product": "SAP NetWeaver Application Server for ABAP and ABAP Platform", "versions": [{"status": "affected", "version": "KRNL64NUC 7.22"}, {"status": "affected", "version": "7.22EXT"}, {"status": "affected", "version": "KRNL64UC 7.22"}, {"status": "affected", "version": "7.53"}, {"status": "affected", "version": "8.04"}, {"status": "affected", "version": "KERNEL 7.22"}, {"status": "affected", "version": "7.54"}, {"status": "affected", "version": "7.77"}, {"status": "affected", "version": "7.93"}, {"status": "affected", "version": "9.16"}, {"status": "affected", "version": "9.18"}, {"status": "affected", "version": "9.19"}, {"status": "affected", "version": "9.20"}], "defaultStatus": "unaffected"}]}], "published": "2026-09-08T01:17:51.987", "references": [{"url": "https://me.sap.com/notes/3757002", "source": "cna@sap.com"}, {"url": "https://url.sap/sapsecuritypatchday", "source": "cna@sap.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "cna@sap.com", "description": [{"lang": "en", "value": "CWE-191"}]}], "descriptions": [{"lang": "en", "value": "SAP NetWeaver Application Server for ABAP and ABAP Platform allows an unauthenticated user to send a specially crafted packet that triggers reprocessing of a previously buffered user request, potentially hijacking another user's session under narrow timing conditions. Successful exploitation could result in high impact on confidentiality and integrity, with low impact on availability of the application."}], "lastModified": "2026-09-09T05:17:27.420", "sourceIdentifier": "cna@sap.com"}