CVE-2026-66766
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk21th percentile - higher than 21% of all known CVEs
Summary
SAP S/4HANA (Private Cloud) uses a third-party component that contains a Regular Expression Denial of Service (ReDoS) vulnerability. An unauthenticated attacker could supply specially crafted input that triggers excessive processing within the affected functionality. Successful exploitation could exhaust system resources and make the service unavailable, resulting in a high impact on availability. There is no impact on confidentiality and integrity.
Risk Assessment
The risk includes service unavailability, which can disrupt business operations and cause financial losses.
Recommendation
It is recommended to apply patches provided by SAP for this component and monitor system resources for anomalies.
Other vulnerabilities in SAP S/4HANA
See all- CVE-2026-0498Critical
Vulnerability in SAP S/4HANA (Private Cloud and On-Premise) allows an attacker with admin privileges to inject arbitrary ABAP code or OS commands via the RFC-exposed function module, bypassing authorization checks.
- CVE-2026-66764Medium
Reprocess Bank Statement Items in SAP S/4HANA does not perform the necessary authorization checks for authenticated users, allowing them to use rules that have not been shared with them, resulting in privilege escalation.
- CVE-2026-44771Medium
In SAP S/4HANA, the Draft operation does not perform necessary authorization checks for an authenticated user. A restricted user could access information within the entity, resulting in escalation of privileges.
- CVE-2026-44769Medium
A vulnerability in SAP S/4HANA Project Management (PPM-PRO) allows an attacker with high privileges to execute crafted database queries, exposing the backend database. This results in low impact on confidentiality, with no impact on integrity and availability.
- CVE-2026-44744Medium
SAP S/4HANA (On-Premise) has an SQL injection vulnerability in a remote-enabled function module. An authenticated attacker can execute unauthorized database queries, exposing sensitive information.
Original NVD description (English source)
SAP S/4HANA (Private Cloud) uses a third-party component that contains a Regular Expression Denial of Service (ReDoS) vulnerability. An unauthenticated attacker could supply specially crafted input that triggers excessive processing within the affected functionality. Successful exploitation could exhaust system resources and make the service unavailable, resulting in a high impact on availability. There is no impact on confidentiality and integrity.