CVE-2026-90725 in PowerProtect Data Domain
Summary
by MITRE • 10/27/2026
Dell PowerProtect Data Domain, Feature Release versions 7.7.1.0 through 8.8, LTS2024 release versions 7.13.1.0 through 7.13.1.80, LTS2025 release versions 8.3.1.0 through 8.3.1.40, LTS2026 release versions 8.6.1.0 through 8.6.1.20, contain a Stack-based Buffer Overflow vulnerability. A high privileged attacker with remote access could potentially exploit this vulnerability, leading to Denial of service.
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Analysis
by VulDB Data Team • 10/27/2026
The identified security flaw resides within Dell PowerProtect Data Domain systems across multiple software release tracks including Feature Releases 7.7.1.0 through 8.8 and various Long Term Support releases spanning from LTS2024 version 7.13.1.0 up to 7.13.1.80, as well as LTS2025 versions 8.3.1.0 through 8.3.1.40 and LTS2026 versions 8.6.1.0 through 8.6.1.20. This vulnerability is classified technically as a stack-based buffer overflow, which corresponds to Common Weakness Enumeration identifier CWE-121. The core technical issue involves the improper handling of input data where the application fails to adequately verify the length or bounds of user-supplied information before copying it into a fixed-size buffer allocated on the call stack. When an attacker provides input that exceeds the expected boundary, the excess data overwrites adjacent memory locations on the stack, potentially corrupting critical control structures such as return addresses and saved frame pointers.
The operational impact of this vulnerability is primarily characterized by a denial of service condition rather than arbitrary code execution or privilege escalation in its current exploitation context. Because the attack requires high privileged access with remote connectivity to trigger the flaw, it suggests that the vulnerable function may be accessible only through authenticated administrative interfaces or specific management protocols. An attacker who successfully exploits this stack-based buffer overflow can cause the affected application process to crash due to memory corruption and invalid instruction pointers. This results in service disruption for data protection operations managed by the PowerProtect Data Domain system, potentially halting backup jobs, replication processes, and storage availability until the service is manually restarted or the system is rebooted.
From a threat intelligence perspective, this vulnerability aligns with MITRE ATT&CK techniques related to resource exhaustion and denial of service against network services. While stack-based buffer overflows are frequently associated with remote code execution vulnerabilities such as those mapped to CWE-94 when input validation is completely absent or bypassable in lower privilege contexts, the specific constraints here limit the impact to availability degradation. The requirement for high privileged access significantly reduces the attack surface compared to unauthenticated exploits but still poses a serious risk within environments where insider threats or compromised administrative credentials are a concern. Attackers with elevated privileges could leverage this flaw as part of an escalation strategy or simply to disrupt critical data infrastructure during periods of operational sensitivity.
Mitigation strategies must prioritize immediate software remediation through vendor-provided patches that address the input validation logic and enforce strict boundary checks on all stack-allocated buffers involved in processing remote requests. Administrators should ensure that Dell PowerProtect Data Domain systems are updated to versions beyond 8.8 for Feature Releases, later than 7.13.1.80 for LTS2024, after 8.3.1.40 for LTS2025, and past 8.6.1.20 for LTS2026. In the interim before patching, network segmentation policies should restrict access to management interfaces strictly to trusted administrative subnets using strong authentication mechanisms such as multi-factor authentication. Additionally, deploying intrusion detection systems capable of identifying anomalous memory access patterns or malformed packet structures associated with buffer overflow attempts can provide an additional layer of defense against exploitation attempts targeting this specific weakness in the application logic.