VulnerabilityPublished 25 Sep 2025

CVE-2025-26482: Dell PowerEdge R770 · Exposure of Sensitive System Information Due to Uncleared Debug Information

Affects Dell PowerEdge R770Source CVE Database V5

Not known to be exploited · CVSS 4.9 Medium.

Data as of 26 Oct 2026, 09:15 UTC

CVSS 3.1 base score

4.9Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.3% chance of exploitation in 30 days – higher than 22% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Attack Vector: Network
Attack Complexity: Low
Privileges Required: High
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: None
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: High: The attacker is authorized with (i.e., requires) privileges that provide significant (e.g., administrative) control over the vulnerable component that could affect component-wide settings and files.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 25 Sep 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Affected software

Product	Affected	Fixed in
Dell PowerEdge R770	Affected *	Fixed in–

AI-suggested

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.

Description

Dell PowerEdge Server BIOS and Dell iDRAC9, all versions, contains an Information Disclosure vulnerability. A high privileged attacker with remote access could potentially exploit this vulnerability, leading to Information Disclosure.

Impact

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.

CWE-1258Exposure of Sensitive System Information Due to Uncleared Debug Information (opens in a new tab)
Base weakness
The hardware does not fully clear security-sensitive values, such as keys and intermediate values in cryptographic operations, when debug mode is entered.
Architecture and Design
Whenever debug mode is enabled, all registers containing sensitive assets must be cleared.
OWASP ASVS 4.0.3
V8.3.2 (opens in a new tab)
Attack patterns
Collect Data from Common Resource Locations (opens in a new tab)
Lifting Sensitive Data Embedded in Cache (opens in a new tab)
Retrieve Embedded Sensitive Data (opens in a new tab)
Pull Data from System Resources (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

dell.com/support/kbdoc/en-us/000370138/dsa-2025-046-security-update-for-dell-poweredge-server-and-dell-idrac9-for-information-disclosure-vulnerability (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 3 Oct 2025, 00:42 UTC

WeaknessesCWE-1258

Technical details

References

Community reviews

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