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CVE-2026-0509

SAP Netweaver As Abap Kernel broken access control

9.6 CRITICALEPSS 0.38%
  1. Published10 Feb 2026

Description

SAP NetWeaver Application Server ABAP and ABAP Platform allows an authenticated, low-privileged user to perform background Remote Function Calls without the required S_RFC authorization in certain cases. This can result in a high impact on integrity and availability, and no impact on the confidentiality of the application.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeChanged
ConfidentialityNone
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H

Affected products

SAP Netweaver As Abap Kernel7.22 · 7.53 · 7.54 · 7.77
SAP Netweaver As Abap Krnl64nuc7.22 · 7.22ext
SAP Netweaver As Abap Krnl64uc7.22 · 7.22ext · 7.53

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

Patch & vendor advisories

References

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Frequently asked

Is CVE-2026-0509 being actively exploited?

CVE-2026-0509 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.38%.

How severe is CVE-2026-0509?

CVE-2026-0509 has a CVSS 3.1 base score of 9.6, rated critical. EPSS estimates a 0.38% probability of exploitation.

Which products are affected by CVE-2026-0509?

Affected products include SAP Netweaver As Abap Kernel, SAP Netweaver As Abap Krnl64nuc, SAP Netweaver As Abap Krnl64uc.

How do I fix CVE-2026-0509?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-0509 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.