Quick answers
- Is CVE-2026-66764 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-66764 being exploited in the wild.
- How severe is CVE-2026-66764?
- Medium severity, with a CVSS score of 4.3, published 11 August 2026.
- Which products and versions are affected?
- SAP S/4HANA.
- Is there a fix for CVE-2026-66764?
- 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-2026-66764 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-66764?
- Check whether you run SAP S/4HANA. 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
This is an authorization check bypass vulnerability in SAP S/4HANA's Bank Statement Item reprocessing component. The vulnerability affects the access control logic that should prevent authenticated users from using shared bank reconciliation rules outside their delegated permissions. The attack requires authentication and network access to the affected SAP system; no user interaction is needed beyond normal application use. An authenticated attacker can escalate privileges to use restricted financial rules, potentially manipulating bank statement processing without proper authorization controls. SAP has released a security patch as part of their regular patch day process.
Affected products
- SAP S/4HANA
Timeline
- 2026-08-11: disclosed