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Dell iDRAC9 CVE-2026-79940

| EUVDEUVD-2026-66655 MEDIUM
Improper Access Control (CWE-284)
2026-08-26 dell GHSA-526f-3hr4-7wmf
5.9
CVSS 3.1 · Vendor: dell
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Severity by source

Vendor (dell) PRIMARY
5.9 MEDIUM
AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
vuln.today AI
5.9 MEDIUM

Description indicates unauthorized data access (confidentiality), so C:H replaces vendor's I:H; AC:H and PR:N retained from vendor vector as they are consistent with an unauthenticated bypass requiring specific conditions.

3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
4.0 AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (dell).

CVSS VectorVendor: dell

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

Lifecycle Timeline

3
Patch available
Aug 26, 2026 - 20:03 EUVD
Analysis Generated
Aug 26, 2026 - 19:20 vuln.today
CVE Published
Aug 26, 2026 - 18:16 cve.org
MEDIUM 5.9

DescriptionCVE.org

Dell iDRAC9, 14G versions prior to 7.00.00.182 and 15G/16G versions prior to 7.20.30.50, contains an Improper Access Control vulnerability. An unauthenticated attacker with remote access could potentially exploit this vulnerability, leading to gaining access to unauthorized data.

AnalysisAI

Improper access control in Dell iDRAC9 allows an unauthenticated remote attacker to access unauthorized data under high-complexity conditions. Affected generations are 14G firmware prior to 7.00.00.182 and 15G/16G firmware prior to 7.20.30.50. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Identify exposed iDRAC9 management interface
Exploit
Craft request exploiting access control bypass
Execution
Satisfy high-complexity precondition
Impact
Retrieve unauthorized management data

Vulnerability AssessmentAI

Exploitation Exploitation requires network-level access to the iDRAC9 management interface (typically TCP port 443 for the web UI or Redfish API, or UDP 623 for IPMI). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 base score of 5.9 (Medium) reflects a notable tension in the signal set: the vector is network-accessible and requires no authentication (AV:N/PR:N/UI:N), which is inherently serious for a management controller, but AC:H indicates the attack requires specific conditions to succeed, moderating the automated exploitability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker with network access to an iDRAC9 management interface - for instance via a misconfigured management VLAN or an internet-exposed BMC port - satisfies specific high-complexity preconditions (exact nature not disclosed) and issues a crafted unauthenticated request that bypasses access controls to retrieve sensitive management data such as credentials, configuration details, or hardware telemetry. No public exploit code has been identified at time of analysis, but the Authentication Bypass tag indicates the bypass mechanism is categorically exploitable rather than requiring exploitation of a memory safety flaw.
Remediation The primary fix is to upgrade iDRAC9 firmware to version 7.00.00.182 or later for 14G servers, and to version 7.20.30.50 or later for 15G/16G servers, as detailed in Dell advisory DSA-2026-374 at https://www.dell.com/support/kbdoc/en-us/000502514/dsa-2026-374-security-update-for-dell-idrac9-vulnerability. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-79940 vulnerability details – vuln.today

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