# CVE-2026-76966: SAP NetWeaver ABAP RFC protocol memory corruption

Source: https://junglewise.ai/threats/cve-2026-76966-due-to-improper-rfc-protocol-validation-in-the-sap-kernel-used-by  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-76966 · Severity: high · CVSS 8.9 · Published 2026-11-10

SAP NetWeaver and ABAP Platform are enterprise resource planning systems that process sensitive business data and transactions. An unauthenticated attacker can send a specially crafted request to exploit improper validation in the RFC protocol handler, corrupting memory and potentially compromising the confidentiality and integrity of stored data. This could lead to unauthorized data access or system manipulation without authentication.

Technologies: [SAP ABAP Platform](https://junglewise.ai/threats/technologies/sap-abap-platform), [SAP NetWeaver](https://junglewise.ai/threats/technologies/netweaver). Vendors: [SAP](https://junglewise.ai/threats/vendors/sap).

## Quick answers

**Is CVE-2026-76966 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-76966 being exploited in the wild.

**How severe is CVE-2026-76966?** High severity, with a CVSS score of 8.9, published 10 November 2026.

**Which products and versions are affected?** SAP NetWeaver; SAP ABAP Platform.

**Is there a fix for CVE-2026-76966?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-76966 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-76966?** Check whether you run SAP ABAP Platform or SAP NetWeaver. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability stems from improper RFC protocol validation in the SAP Kernel used by the ABAP Application Server, allowing an unauthenticated attacker to send a crafted RFC request that exploits logical errors in memory management. The attack is network-reachable and requires no authentication or user interaction. Successful exploitation results in memory corruption affecting confidentiality and integrity.

## Affected products

- SAP NetWeaver
- SAP ABAP Platform

## Timeline

- 2026-11-10: advisory

## References

- [https://me.sap.com/notes/3769130](https://me.sap.com/notes/3769130)
- [https://url.sap/sapsecuritypatchday](https://url.sap/sapsecuritypatchday)

## Related threats

- [SAP NetWeaver Application Server ABAP memory corruption denial of service](https://junglewise.ai/threats/cve-2026-76973-due-to-a-memory-corruption-vulnerability-in-application-server)
- [SAP NetWeaver Application Server ABAP memory corruption denial of service](https://junglewise.ai/threats/cve-2026-76970-due-to-a-memory-corruption-vulnerability-in-application-server)
- [SAP NetWeaver Application Server ABAP authorization bypass](https://junglewise.ai/threats/cve-2026-76965-sap-netweaver-application-server-abap-and-abap-platform-does-not)
- [SAP NetWeaver AS ABAP authentication assertion verification bypass](https://junglewise.ai/threats/cve-2026-120017-sap-netweaver-as-abap-and-abap-platform-does-not-perform)
- [SAP NetWeaver Internet Graphics Service input validation buffer overflow](https://junglewise.ai/threats/cve-2026-120008-sap-netweaver-internet-graphics-service-does-not-sufficiently)