Deserialization in SAP Netweaver
CVE-2026-23685
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.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.001 (2.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 2.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000
Affected products
- SAP Netweaver — versions 7.50
- SAP Se Netweaver (Jms Service) — versions J2EE-FRMW 7.50
Weakness classification (CWE)
References
- me.sap.com/notes/3687285 (Permissions Required)
- url.sap/sapsecuritypatchday (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-23685?
- CVE-2026-23685 is a medium-severity vulnerability in SAP Netweaver, classified under Deserialization of Untrusted Data. CVSS score: 4.4/10. Published 2026-02-10.
- How severe is CVE-2026-23685?
- Medium severity. CVSS v3 base score is 4.4 out of 10.