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Dell OpenManage Enterprise CVE-2026-91914

| EUVDEUVD-2026-113943 HIGH
Authentication Bypass by Spoofing (CWE-290)
2026-10-30 dell GHSA-vxmm-jqx6-38qf
7.1
CVSS 3.1 · Vendor: dell
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Gain adjacent-network foothold
  2. Delivery
    Target OME authentication exchange
  3. Exploit
    Spoof/bypass authentication (CWE-290)
  4. Execution
    Steal valid session token
  5. Impact
    Impersonate legitimate user on console

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Anti-spoofing controls
MITRE ATT&CK

1 technique across 1 tactic: Defense Evasion

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Exploitation requires adjacent-network access (AV:A) - the attacker must be on the same local/management network segment or otherwise L2/L3-adjacent to the OpenManage Enterprise console, not reaching it across the open internet; this is the primary limiting factor. Within that position no authentication is required (PR:N) and no user interaction is needed (UI:N), and the flaw affects Dell OpenManage Enterprise versions prior to 4.8.0. The available sources describe the condition only as an Authentication Bypass by Spoofing leading to session theft; the exact protocol, feature, or configuration that is spoofed is not described in the available sources. The effective mitigation per the vendor is updating to version 4.8.0 or later.

Impact

The CVSS 3.1 vector (AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N, base 7.1) is the strongest signal available and indicates a low-complexity, unauthenticated attack that does not require user interaction but is bounded to an adjacent network (AV:A) rather than the open internet - so an attacker needs a foothold on the same logical network segment, L2/L3 adjacency, or management LAN as the OpenManage Enterprise console. The high integrity impact (I:H) reflects that authentication-bypass-by-spoofing (CWE-290) lets an attacker steal or forge a session and act as a legitimate user, while confidentiality is only partially affected (C:L) and availability is untouched (A:N). vuln.today assigns a 'this_week' priority (not act_now/emergency), which is consistent with a serious-but-not-drop-everything issue. Key corroborating signals are MISSING: no EPSS probability was supplied, there is no CISA KEV listing, and no proof-of-concept or exploit reference is present - so there is no public exploit identified at time of analysis and no evidence of active exploitation. The adjacent-network constraint is the main factor separating this from a wormable internet-facing bug; it is a real priority for organizations whose management network is reachable by lower-trust hosts, but lower urgency where the OME console is strictly isolated.

Exploit ScenarioDerived

An attacker who has already gained a position on the same management or adjacent network segment as the Dell OpenManage Enterprise console spoofs or manipulates the authentication exchange to bypass login, resulting in theft of a valid user session. With that session the attacker can impersonate a legitimate OME user and interact with the managed-server fleet. No public exploit code or PoC reference was provided in the available sources.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Oct 30, 2026

Authentication bypass by spoofing in Dell OpenManage Enterprise versions prior to 4.8.0 lets an unauthenticated attacker who has adjacent network access hijack existing user sessions, scoring CVSS 3.1 base 7.1 (AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N). The attack is low in complexity and needs no credentials or user interaction, but it is bounded to attackers positioned on the same local or management network segment as the OpenManage Enterprise console rather than the open internet. No public exploit code or confirmed active exploitation was identified at time of analysis, and the vendor's stated complete fix is upgrading to version 4.8.0 or later.

RemediationAI

Vendor-released patch: upgrade Dell OpenManage Enterprise to version 4.8.0 or later, which the vendor identifies as the effective fix for this issue; the release details are in Dell advisory DSA-2026-467 at https://www.dell.com/support/kbdoc/en-us/000523220/dsa-2026-467-security-update-for-dell-openmanage-enterprise-vulnerabilities. Because exploitation requires adjacent network access (AV:A), reducing L2/L3 adjacency to the OpenManage Enterprise console - keeping the management interface off general user and guest segments and reachable only from tightly scoped administrative networks - lowers exposure while the upgrade is scheduled, at the cost of additional network segmentation and firewall administration and without repairing the underlying spoofing weakness. No other compensating control is specified by the available sources.

Affected VersionsENISA

OpenManage Enterprise 0 <4.8.0 or later

Affects your stack

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Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The root cause class is CWE-290, Authentication Bypass by Spoofing: the application makes an authentication or session-trust decision based on an attribute that an attacker can forge or imitate, rather than on a properly verified credential, so a spoofed value is accepted as proof of identity and an existing session can be taken over. The available sources describe the condition only as an authentication bypass by spoofing leading to session theft; the exact protocol, feature, or configuration element that is spoofed is not described in the available sources, so the precise trigger should be confirmed against Dell advisory DSA-2026-467. The affected product is Dell OpenManage Enterprise, Dell's management console for PowerEdge server fleets, matched by CPE cpe:2.3:a:dell:openmanage_enterprise:*:*:*:*:*:*:*:*, and the CVSS vector's AV:A metric confirms the flaw is exploitable from a position of L2/L3 adjacency to the console - a foothold on the management LAN or an adjoining segment is a prerequisite, and no authentication (PR:N) or user interaction (UI:N) is required once that position is reached.

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Severity by source

Vendor (dell) PRIMARY 7.1 HIGH
AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
vuln.today AI 7.1 HIGH

Adjacent-network, unauthenticated, no-interaction spoofing (AV:A/AC:L/PR:N/UI:N); session theft/impersonation drives I:H with partial data exposure C:L and no availability impact.

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

Primary rating from Vendor (dell).

CVSS VectorVendor: dell

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

Lifecycle Timeline

2
Patch available
Oct 30, 2026 - 15:17 EUVD
CVE Published
Oct 30, 2026 - 13:37 cve.org
HIGH 7.1

DescriptionCVE.org

Dell OpenManage Enterprise, versions prior to 4.8.0, contains an Authentication Bypass by Spoofing vulnerability. An unauthenticated attacker with adjacent network access could potentially exploit this vulnerability, leading to Session theft.

Executive ViewAI

Why It Matters

Dell OpenManage Enterprise (versions prior to 4.8.0) contains an authentication bypass that allows an unauthenticated attacker with adjacent network access to hijack legitimate user sessions. This puts datacenter management operations at risk, as an attacker on the same network segment could gain unauthorized control and disrupt critical infrastructure. Leadership should prioritize remediation because the vulnerability enables lateral movement and operational tampering without credentials.

Business Impact: High
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.2%
Top 84% exploitable
Prevalence
Medium
common enterprise systems-management console in Dell server environments, not universal
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.2%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Controlled
Automatable
No
Human Impact
High
Technical Impact
Partial

Priority Score

36
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +36
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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