Description

Dell PowerProtect Data Manager, versions 20.2.0.0 and below, contain a stack buffer overflow vulnerability in file-level restore agent. A high privileged remote attacker could potentially exploit this vulnerability, leading to Information disclosure.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.8",
  "pubDate": "2026-09-03T13:06:03.427Z",
  "pubdate": "2026-09-03T13:06:03.427Z",
  "executiveSummary": "Dell PowerProtect Data Manager versions 20.2.0.0 and below are susceptible to a stack-based buffer overflow vulnerability located within the file-level restore agent.\nThis vulnerability originates from improper bounds checking during the processing of data within the restore agent, allowing an attacker to overwrite adjacent memory segments on the stack.\nA remote, high-privileged attacker can leverage this flaw to perform unauthorized actions or gain access to sensitive system information.\nThe primary impact of a successful exploitation is Information disclosure, which may lead to the compromise of data integrity or confidentiality within the backup environment.\nSuccessful exploitation requires the attacker to possess high-level privileges within the target infrastructure, limiting the initial attack surface but posing a significant risk for lateral movement or administrative escalation.\nThe vulnerability is inherent to the restore agent architecture, necessitating vendor-supplied security updates to address the underlying memory management deficiency.",
  "technicalDetails": "The vulnerability is classified as a stack-based buffer overflow occurring within the file-level restore agent component of Dell PowerProtect Data Manager. The root cause is a failure in the application's input validation logic, specifically when handling data packets destined for the restore agent. The software does not sufficiently verify the size of incoming data before copying it into a fixed-size buffer allocated on the process stack.\nExploitation involves an attacker crafting a malicious request with a payload that exceeds the designated memory allocation. By sending this malformed input to the file-level restore agent, an attacker can trigger an overflow, overwriting the saved instruction pointer, function return addresses, or local variables located on the stack. Because this process occurs in a high-privileged context, the memory corruption can be utilized to redirect execution flow or extract sensitive memory contents.\nThe attack flow begins with the attacker establishing communication with the file-level restore agent service. Once authenticated with high privileges, the attacker transmits a specially crafted sequence of bytes designed to exceed the target buffer's capacity. As the application attempts to copy this data into the stack-allocated buffer using unsafe memory operations, the excessive data spills into adjacent stack memory. In the context of this vulnerability, the exploitation is directed towards achieving Information disclosure by manipulating the process to expose internal data structures or sensitive information residing in memory.\nThe affected component, the file-level restore agent, typically operates as an active service within the Dell PowerProtect Data Manager ecosystem. Because the service performs operations with elevated system privileges, the overflow allows the attacker to bypass standard security boundaries. The impact is significant, as information gathered through such a disclosure could contain cryptographic keys, session tokens, or other system-level configuration data that facilitates further compromise of the backup infrastructure. The exploit process does not require physical access to the server, as it can be triggered remotely via the network protocols utilized by the restore agent, provided the attacker has already achieved the necessary high-privileged access level required to interact with the vulnerable service endpoint."
}