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Introduction
In recent weeks, SAP
the Original
A critical vulnerability in SAP NetWeaver, tracked as CVE-2025-31324, has caught the attention of cybercriminals worldwide. Rated 10 on the CVSS scale, this flaw in the Visual Composer development server allows threat actors to execute arbitrary code remotely without any authentication, making it a highly exploitable issue.
Cybersecurity company ReliaQuest flagged the vulnerability after observing exploitations starting in late April, soon after SAP patched the flaw. However, the attacks continue to escalate. Initially, the issue was believed to be a remote file inclusion (RFI) vulnerability but later confirmed as an unrestricted file upload vulnerability. This flaw allows hackers to upload malicious files directly onto the system without any authorization.
Multiple threat actors, including Chinese APT groups like Chaya_004 and others like UNC5221, UNC5174, and CL-STA-0048, have been found targeting this vulnerability. Moreover, researchers have uncovered links to Russian ransomware groups such as BianLian and RansomEXX, showing that the vulnerability is attracting attention from both state-sponsored and financially motivated attackers.
The exploitation of CVE-2025-31324 has led to widespread concerns. A follow-up vulnerability, CVE-2025-42999, was disclosed and patched in mid-May, indicating that SAP NetWeaver’s Visual Composer may be under sustained attack from multiple vectors. SAP admins are urged to immediately apply patches and monitor for suspicious activity. Failure to do so could result in service disruption, data leakage, and even regulatory non-compliance.
What Undercode Says:
CVE-2025-31324 represents more than just a technical vulnerability;
The speed with which attackers were able to weaponize this flaw emphasizes the importance of patch management. Although SAP responded swiftly with patches, the continued exploitation of the vulnerability highlights the challenge of maintaining security in complex systems. Many organizations may be struggling with timely patching due to the critical nature of NetWeaver within their infrastructure, which often requires careful testing before updates can be applied.
The involvement of multiple APT groups, including Chinese and Russian threat actors, suggests that the vulnerability is not just a target for opportunistic cybercriminals but is also on the radar of well-funded and highly skilled adversaries. This opens up the possibility of more advanced attacks, such as targeted espionage or the installation of persistent backdoors that could provide ongoing access to sensitive systems.
Moreover, the discovery of a second vulnerability, CVE-2025-42999, only adds to the urgency of the situation. These two flaws, coupled with active exploitation, create a perfect storm for organizations that are not up to date with their security patches.
From an organizational perspective, SAP administrators must act quickly. Delaying patching or failing to monitor suspicious activity on NetWeaver servers could lead to devastating consequences, including full system compromise, loss of sensitive data, and financial damage due to operational downtime. The fact that multiple attackers are now involved further increases the likelihood of successful breaches.
The reliance on SAP NetWeaver in many enterprise environments also means that attackers are likely to keep exploiting this vulnerability for the foreseeable future. Thus, organizations should not only patch their systems but also ensure they have comprehensive monitoring mechanisms in place to detect any unauthorized activity.
Fact Checker Results:
🔍 CVSS Score of 10: The CVE-2025-31324 vulnerability is ranked 10 on the CVSS scale, indicating its extreme severity. Immediate patching is highly recommended to mitigate risks.
🔍 Continued Exploitation Despite Patching: Even after SAP’s emergency patch in April, the flaw continues to be exploited by various threat groups, showing the vulnerability’s widespread impact.
🔍 Multiple Threat Actors Involved: Both Chinese APT groups and Russian ransomware groups are actively exploiting this flaw, highlighting the strategic importance of this vulnerability.
Prediction:
Looking ahead,
References:
Reported By: www.darkreading.com
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