SecPod

Learn Search

Search across all Learn content

← Back to Security Research
ALERT: Another Deserialization RCE Vulnerability in Oracle WebLogic Server (CVE-2019-2729) Exploited in the Wild

ALERT: Another Deserialization RCE Vulnerability in Oracle WebLogic Server (CVE-2019-2729) Exploited in the Wild

Jun 19, 2019By Shakeel Bhat2 min read

image credit: blogs.oracle.com

Oracle has released an out-of-band security update to address a critical oracle weblogic server deserialization RCE. A deserialization flaw allows remote code execution and tracked with CVE-2019-2729. Using a vulnerability scanning tool. Also, This vulnerability is rated critical and is found to be exploited in-the-wild.

The vulnerability exists due to a deserialization flaw in XMLDecoder in oracle weblogic server deserialization rce Web Services and is triggered by wls9_async and wls-wsat components in Oracle WebLogic allowing unauthenticated remote code execution. A patch management solution is critical to remediate these vulnerabilities. Also, This vulnerability published by researchers from the KnownSec 404 Team claiming that they were able to bypass the patch that issued in April (CVE-2019-2725). As per the researchers,

"a new Oracle WebLogic deserialization RCE 0day vulnerability was found and is being actively used in the wild. We analyzed and reproduced the 0day vulnerability, which is based on and bypasses the patch for CVE-2019–2725"

But, Oracle has clarified that although both CVE-2019-2725 and CVE-2019-2729 are deserialization issues, CVE-2019-2729 is a distinct vulnerability from CVE-2019-2725.
At the time of publishing this blog, no known PoC code was available for CVE-2019-2729. However, the KnownSec 404 Team reports seeing the exploitation of this vulnerability in the wild. They also posted an image of successful RCE exploitation achieved by exploiting this vulnerability.

image credit: medium.com

command calculator
command calculator

Affected Products:

The vulnerability affects these versions of the application:

  • Oracle WebLogic Server 10.3.6.0.0
  • Oracle WebLogic Server 12.1.3.0.0
  • Oracle WebLogic Server 12.2.1.3.0

Impact:

An attacker can run arbitrary code in the context of the affected application.

Solution:
The Oracle WebLogic patches are available only for customers. However, Please advised to download the patch from Oracle portal and install. SanerNow’s software deployment capability used to install executable/scripts.

Oracle strongly recommends that customers apply the updates provided by this Security Alert as soon as possible

Mitigation:

Two mitigations are available:

  • If components wls9_async_response and wls-wsat not applied in the WLS cluster, find and delete wls9_async_response.war, wls-wsat.war and restart the WebLogic service.
  • Control URL access for the /_async/* and /wls-wsat/* paths by access policy control.

Featured Posts

Open Silent Lynx Hits CIS Governments With WinRAR Flaw
threat intelligenceSilent Lynx Hits CIS Governments With WinRAR Flaw

CVE Research

Silent Lynx Hits CIS Governments With WinRAR Flaw

Silent Lynx (UAT-6275 / TAG-193) is a cyber-espionage actor targeting government organizations across the Commonwealth of Independent States. From June 2025 through August 2026, the group used four infection chains, including macro-enabled documents, PS2EXE downloaders, LNK-based PowerShell loaders, and WinRAR archives that exploit CVE-2025-8088, to deploy custom reverse shells such as FoalShell, Chvost, Laplas, and PickleShell. Activity spans nine countries and focuses on diplomacy, economic development, environmental management, water resources, and energy. This article summarizes the campaign’s delivery methods, infrastructure exposure, indicators of compromise, and practical mitigations for defenders.

Oct 16, 2026

Open Drupal Fixes Critical Field UI Flaw Linked to Remote Code Execution
Drupal Fixes Critical Field UI Flaw Linked to Remote Code Execution

CVE Research

Drupal Fixes Critical Field UI Flaw Linked to Remote Code Execution

A critical vulnerability in Drupal core's Field UI module could allow attackers to execute arbitrary code on vulnerable websites through exposed contributed modules or custom code. Tracked as CVE-2026-108097, the flaw stems from improper validation of PHP callbacks during table rendering. At least one known exploitation path does not require authentication, potentially putting affected websites at risk of server compromise.

Oct 16, 2026

Open Palo Alto PAN-OS Vulnerability CVE-2026-0322 Could Allow Root-Level Code Execution
vulnerability researchPalo Alto PAN-OS Vulnerability CVE-2026-0322 Could Allow Root-Level Code Execution

CVE Research

Palo Alto PAN-OS Vulnerability CVE-2026-0322 Could Allow Root-Level Code Execution

Oct 15, 2026

Open Cisco Secure Email Gateway Under Attack: Critical CVE-2026-76519 Enables Arbitrary File Write
vulnerability researchCisco Secure Email Gateway Under Attack: Critical CVE-2026-76519 Enables Arbitrary File Write

CVE Research

Cisco Secure Email Gateway Under Attack: Critical CVE-2026-76519 Enables Arbitrary File Write

Oct 15, 2026