CVE-2026-23685 Insecure Deserialization vulnerability in SAP NetWeaver (JMS service)
An authenticated administrator can cause denial of service in SAP NetWeaver JMS service via insecure deserialization of crafted content.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-23685?
CVE-2026-23685 is a medium-severity unsafe deserialization vulnerability in Sap Netweaver, published on 10 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Due to a Deserialization vulnerability in SAP NetWeaver (JMS service), an attacker authenticated as an administrator with local access could submit specially crafted content to the server. If processed by the application, this content could trigger unintended behavior during internal logic execution, potentially causing a denial of service. Successful exploitation results in a high impact on availability, while confidentiality and integrity remain unaffected.
Weakness: CWE-502
Which versions are affected by CVE-2026-23685?
It affects 1 product.
Products include Sap Netweaver.
How do I fix CVE-2026-23685?
No fix has been published for CVE-2026-23685 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-2026-23685 being exploited?
There is no known exploitation of CVE-2026-23685 in the wild and no public exploit code.
Other vulnerabilities in Sap Netweaver
Sources
Also known as GHSA-ccw7-5mwj-q9wj.