CVE-2025-42966 Insecure Deserialization vulnerability in SAP NetWeaver (XML Data Archiving Service)
An authenticated administrator can exploit insecure Java deserialization in SAP NetWeaver XML Data Archiving Service to compromise confidentiality, integrity, and availability.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-42966?
CVE-2025-42966 is a critical unsafe deserialization vulnerability in SAP_SE SAP NetWeaver (XML Data Archiving Service), published on 8 Jul 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
SAP NetWeaver XML Data Archiving Service allows an authenticated attacker with administrative privileges to exploit an insecure Java deserialization vulnerability by sending a specially crafted serialized Java object. This could lead to high impact on confidentiality, integrity, and availability of the application.
Weakness: CWE-502
Which versions are affected by CVE-2025-42966?
How do I fix CVE-2025-42966?
No fix has been published for CVE-2025-42966 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2025-42966 being exploited?
There is no known exploitation of CVE-2025-42966 in the wild and no public exploit code.
Sources
Also known as GHSA-h8pf-m8cc-p8xp.