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CVE-2025-42963 is a critical unsafe deserialization vulnerability in the Log Viewer component of SAP NetWeaver Application Server for Java. The flaw arises from inadequate validation of serialized Java objects handled by the Log Viewer diagnostic interface. An authenticated administrator can supply a malicious serialized object that is deserialized by the Java runtime, allowing attacker-controlled gadget chains to execute. Reported exploitation paths indicate the chain can leverage Java reflection mechanisms and ultimately invoke operating system command execution, resulting in compromise of the underlying host.
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No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A deserialization vulnerability in SAP products referenced among multiple critical SAP flaws in 2025 that were rapidly exploited in the wild.
Listed as a trending/high-risk CVE affecting SAP; no additional technical details provided in the content.
A critical unsafe deserialization vulnerability in SAP NetWeaver Application Server Java (CVSS 9.1).
A critical Java deserialization vulnerability in the SAP NetWeaver Application Server for Java Log Viewer that allows authenticated administrators to upload malicious serialized objects and achieve arbitrary OS command execution via gadget chains, leading to full system compromise.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.