CVE-2026-109805 (GCVE-0-2026-109805)

Vulnerability from cvelistv5 – Published: 2026-11-10 00:49 – Updated: 2026-11-10 00:49
VLAI
Title
Weak Cryptography in SAP NetWeaver and ABAP Platform (Application Server ABAP)
Summary
Due to a weak HMAC cryptography calculation when receiving an RFC callback in SAP NetWeaver and ABAP Platform (Application Server ABAP), an authenticated attacker with high privileges and access to a network segment between application servers on an SAP system could intercept network communication between application servers and change the identity of the caller, enabling the execution of unauthorized function calls on the target server with escalated privileges leading to High impact on Confidentiality, Integrity, and Availability of the application.
Severity
6.4 (Medium)
CVSS:3.1/AV:A/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
sap CNA
References
Impacted products
Vendor Product Version
SAP_SE SAP NetWeaver and ABAP Platform (Application Server ABAP) Affected: KRNL64NUC 7.22
Affected: 7.22EXT
Affected: KRNL64UC 7.22
Affected: 7.53
Affected: KERNEL 7.22
Affected: 7.54
Affected: 7.77
Affected: 7.93
Affected: 9.16
Affected: 9.20
Affected: 9.21
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            "attackVector": "ADJACENT_NETWORK",
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        "dateUpdated": "2026-11-10T00:49:24.750Z",
        "orgId": "e4686d1a-f260-4930-ac4c-2f5c992778dd",
        "shortName": "sap"
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      "references": [
        {
          "url": "https://me.sap.com/notes/3786876"
        },
        {
          "url": "https://url.sap/sapsecuritypatchday"
        }
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