CVE-2026-66766
published 2026-08-25CVE-2026-66766: SAP S/4HANA (Private Cloud) uses a third-party component that contains a Regular Expression Denial of Service (ReDoS) vulnerability. An unauthenticated…
PriorityP344high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
0.51%
42.6th percentile
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.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| sap_se | sap_s_4hana | — | — |
| sap_se | sap_s_4hana | — | — |
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VulDB
SAP S4HANA 900/UI4HOP1 800 redos
vuldb·2026-08-25·CVSS 7.5
CVE-2026-66766 [HIGH] SAP S4HANA 900/UI4HOP1 800 redos
A vulnerability was found in SAP S4HANA 900/UI4HOP1 800. It has been rated as problematic. Affected is an unknown function. The manipulation leads to inefficient regular expression complexity.
This vulnerability is uniquely identified as CVE-2026-66766. The attack is possible to be carried out remotely. No exploit exists.
GHSA
SAP S/4HANA (Private Cloud) uses a third-party component that contains a Regular Expression Denial of Service (ReDoS) vulnerability.
ghsa_unreviewed·2026-08-25
CVE-2026-66766 [HIGH] CWE-1333 SAP S/4HANA (Private Cloud) uses a third-party component that contains a Regular Expression Denial of Service (ReDoS) vulnerability.
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-08-25
Published