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, which can be accessed by a high-privileged attacker with remote access. This vulnerability is classified under CWE-1258, indicating exposure of sensitive system information due to improper handling of debug data. The vulnerability allows an attacker who already has elevated privileges and network access to extract sensitive information from the system, potentially including configuration details, system internals, or credentials that could facilitate further attacks. The CVSS 3.1 base score is 4.9 (medium severity), with vector AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N, meaning the attack can be performed remotely over the network with low attack complexity but requires high privileges. There is no indication that user interaction is needed, and the vulnerability does not affect system integrity or availability directly. No known exploits are currently reported in the wild, and no patches have been linked yet. The affected product is the Dell PowerEdge R770 server, a widely used enterprise-grade server platform, especially in data centers and critical infrastructure environments. The vulnerability highlights the risk of residual debug information in firmware, which can inadvertently leak sensitive system details to attackers with sufficient access.

For European organizations, this vulnerability poses a moderate risk primarily to data centers and enterprises utilizing Dell PowerEdge R770 servers. Exposure of sensitive system information could aid attackers in reconnaissance and lateral movement within networks, potentially leading to more severe compromises. Confidentiality is the main concern, as attackers could obtain system internals or credentials that facilitate privilege escalation or unauthorized access. Since exploitation requires high privileges and remote access, the threat is more relevant in environments where attackers may already have footholds or where management interfaces are exposed or insufficiently segmented. Critical sectors such as finance, government, telecommunications, and cloud service providers in Europe that rely on Dell PowerEdge servers could be impacted by targeted attacks leveraging this vulnerability. While the vulnerability does not directly affect system integrity or availability, the information disclosure could be a stepping stone for more damaging attacks, increasing the overall risk posture. The absence of known exploits suggests a window of opportunity for organizations to remediate before active exploitation occurs.

European organizations should implement the following specific mitigations: 1) Immediately audit and restrict remote access to Dell iDRAC9 interfaces and BIOS management consoles, ensuring they are accessible only from trusted, internal networks or via secure VPNs. 2) Enforce strict role-based access controls and multi-factor authentication for all administrative interfaces to reduce the risk of high-privileged account compromise. 3) Monitor network traffic and logs for unusual access patterns to management interfaces that could indicate reconnaissance or exploitation attempts. 4) Engage with Dell support to obtain and apply firmware updates or patches as soon as they become available, even if currently no patches are linked, proactively checking Dell’s advisories. 5) Conduct internal vulnerability assessments and penetration tests focusing on server management interfaces to identify potential exposure. 6) Implement network segmentation to isolate management interfaces from general user and internet-facing networks, minimizing exposure. 7) Remove or disable any unnecessary debug or diagnostic features in server firmware where possible. These targeted actions go beyond generic advice by focusing on access control, monitoring, and proactive patch management specific to the affected Dell PowerEdge R770 environment.