CVE-2025-26482 is an information disclosure vulnerability identified in the BIOS and Dell iDRAC9 management interface of Dell PowerEdge R770 servers. The root cause is the presence of uncleared debug information within the system firmware or management controller software. This leftover debug data can be accessed by a high-privileged attacker who has remote access to the affected system. Exploiting this vulnerability does not require user interaction but does require the attacker to already have elevated privileges on the system, such as administrative or root-level access. The vulnerability is classified under CWE-1258, which pertains to the exposure of sensitive system information due to improper clearing of debug information. The CVSS v3.1 base score is 4.9, indicating a medium severity level. The attack vector is network-based (AV:N), with low attack complexity (AC:L), but requires high privileges (PR:H). The impact is limited to confidentiality (C:H), with no impact on integrity or availability. No known exploits are currently reported in the wild, and no patches or mitigation links have been published yet. This vulnerability could allow an attacker to gain sensitive system information such as configuration details, firmware internals, or other debug data that could facilitate further attacks or reconnaissance activities on the affected Dell PowerEdge R770 servers.

For European organizations, the impact of CVE-2025-26482 could be significant in environments where Dell PowerEdge R770 servers are deployed, especially in data centers, cloud service providers, and enterprises relying on these servers for critical workloads. Exposure of sensitive system information could aid attackers in crafting more targeted attacks, potentially leading to privilege escalation or lateral movement within the network. Although the vulnerability itself does not directly compromise system integrity or availability, the leaked information could weaken the overall security posture. Organizations handling sensitive or regulated data (e.g., financial institutions, healthcare providers, government agencies) could face compliance risks if such information disclosure leads to data breaches. The requirement for high privileges limits the threat to insiders or attackers who have already compromised the network perimeter or gained administrative access, but it remains a concern for internal threat actors or advanced persistent threats (APTs).

Given the absence of official patches, European organizations should implement the following specific mitigations: 1) Restrict and monitor remote administrative access to Dell iDRAC9 interfaces and BIOS management consoles using network segmentation, VPNs, and strict firewall rules to limit exposure to trusted personnel only. 2) Enforce strong multi-factor authentication (MFA) and robust credential management for all high-privilege accounts to reduce the risk of unauthorized access. 3) Regularly audit and review access logs and system configurations for signs of suspicious activity or unauthorized privilege escalations. 4) Disable or limit debug features and verbose logging on BIOS and iDRAC where possible to minimize residual debug information exposure. 5) Maintain an up-to-date asset inventory to identify all affected Dell PowerEdge R770 servers and apply any future vendor patches or firmware updates promptly once available. 6) Employ network intrusion detection systems (NIDS) tuned to detect anomalous access patterns to management interfaces. 7) Conduct internal security awareness training emphasizing the risks of privilege misuse and the importance of securing administrative credentials.