CVE-2025-42963CWE-502

Insecure Deserialization in SAP NetWeaver Application Server for Java (Log Viewer )

Critical · published July 8, 2025

CVSS v3.1
9.1
EPSS
1%
Percentile
54.3
In the wild
Unconfirmed
What it is

🔥 An authenticated administrator can unleash chaos with this critical vulnerability! Just one exploit of unsafe Java object deserialization in SAP NetWeaver can lead to a total system takeover! Think of it like a restaurant where the head chef can change the menu without anyone checking — if they decided to add something harmful or completely unapproved, it could ruin the whole dining experience. Here, just like the chef's unchecked access can spoil the meal, an attacker can take full control of the server, wreaking havoc on its entire environment. The consequences are absolutely devastating: an attacker could gain complete control of the operating system, compromising not just your data but the very core of your application’s integrity and availability. This could lead to extensive data breaches, loss of critical services, or even complete system failures — an IT nightmare!

Put simply

Think of it like a restaurant where the head chef can change the menu without anyone checking — if they decided to add something harmful or completely unapproved, it could ruin the whole dining experience. Here, just like the chef's unchecked access can spoil the meal, an attacker can take full control of the server, wreaking havoc on its entire environment. This vulnerability allows authenticated administrator users to exploit unsafe Java object deserialization in the SAP NetWeaver Application server for Java Log Viewer, enabling attackers to execute arbitrary code and completely compromise the system.

What to do

The consequences are absolutely devastating: an attacker could gain complete control of the operating system, compromising not just your data but the very core of your application’s integrity and availability. This could lead to extensive data breaches, loss of critical services, or even complete system failures — an IT nightmare! To remedy this issue, patch your SAP NetWeaver Application server for Java Log Viewer immediately to the latest secure version. Additionally, review your user access controls to limit administrative privileges to only those that are necessary. Regularly audit your system for any signs of unauthorized access. You've got this! Take these steps and you'll reinforce your defenses like a security hero! 🛡️

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00746 · 54.3th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2025-07-08T00:35Z
EPSS history
Timeline
  • 08 JUL 00:35Z
    Insecure Deserialization in SAP NetWeaver Application Server for Java (Log Viewer )
    cvelistv5