Evidence used
- No CISA KEV confirmation is currently recorded.
- The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
- EPSS is 2.04% for the current model date.
BlackTreeCVE IntelligenceFull vulnerability report · 2018
CVE-2018-1183High confidence
Dell EMC Dell EMC Unisphere for VMAX Virtual Appliance, Dell EMC Solutions Enabler Virtual Appliance, Dell EMC VASA Provider Virtual Appliance, Dell EMC SMIS, Dell EMC VMAX Embedded Management (eManagement), Dell EMC VNX2 Operating Environment (OE) for File, Dell EMC VNX2 Operating Environment (OE) for Block, Dell EMC VNX1 Operating Environment (OE) for File, Dell EMC VNX1 Operating Environment (OE) for Block, Dell EMC VNXe3200 Operating Environment (OE), Dell EMC VNXe1600 Operating Environment (OE), Dell EMC VNXe 3100/3150/3300 Operating Environment (OE), Dell EMC ViPR SRM, Dell EMC ViPR SRM, Dell EMC XtremIO, Dell EMC VMAX eNAS, Dell EMC Unity Operating Environment (OE): Improper Restriction of XML External Entity Reference
Dell EMC · Dell EMC Unisphere for VMAX Virtual Appliance, Dell EMC Solutions Enabler Virtual Appliance, Dell EMC VASA Provider Virtual Appliance, Dell EMC SMIS, Dell EMC VMAX Embedded Management (eManagement), Dell EMC VNX2 Operating Environment (OE) for File, Dell EMC VNX2 Operating Environment (OE) for Block, Dell EMC VNX1 Operating Environment (OE) for File, Dell EMC VNX1 Operating Environment (OE) for Block, Dell EMC VNXe3200 Operating Environment (OE), Dell EMC VNXe1600 Operating Environment (OE), Dell EMC VNXe 3100/3150/3300 Operating Environment (OE), Dell EMC ViPR SRM, Dell EMC ViPR SRM, Dell EMC XtremIO, Dell EMC VMAX eNAS, Dell EMC Unity Operating Environment (OE)
9.8CriticalCVSS 3.0
Within 72 hours
Fix not verifiedCritical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded.
R
Open reassessment dashboard →Operational reassessment
Published severity in operational context
Published severityCritical→Operational priority:Critical, unchanged from published severity.unchanged
Compensating controls
- Restrict the affected network interface to trusted sources where business-safe.
- Monitor vendor guidance and exploitation sources for a material change.
Verification
- Confirm that the asset runs Dell EMC Dell EMC Unisphere for VMAX Virtual Appliance, Dell EMC Solutions Enabler Virtual Appliance, Dell EMC VASA Provider Virtual Appliance, Dell EMC SMIS, Dell EMC VMAX Embedded Management (eManagement), Dell EMC VNX2 Operating Environment (OE) for File, Dell EMC VNX2 Operating Environment (OE) for Block, Dell EMC VNX1 Operating Environment (OE) for File, Dell EMC VNX1 Operating Environment (OE) for Block, Dell EMC VNXe3200 Operating Environment (OE), Dell EMC VNXe1600 Operating Environment (OE), Dell EMC VNXe 3100/3150/3300 Operating Environment (OE), Dell EMC ViPR SRM, Dell EMC ViPR SRM, Dell EMC XtremIO, Dell EMC VMAX eNAS, Dell EMC Unity Operating Environment (OE) and falls inside the recorded affected range.
- Recheck the vendor advisory before scheduling a change because no verified fixed version is currently retained.
- Validate exposure, authentication requirements and compensating controls in the actual environment.
- Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Critical technical impact with a remotely reachable, unauthenticated path; no CISA KEV confirmation is currently recorded.
Fix not verified01
What, why and how
In Dell EMC Unisphere for VMAX Virtual Appliance versions prior to 8.4.0.8, Dell EMC Solutions Enabler Virtual Appliance versions prior to 8.4.0.8, Dell EMC VASA Provider Virtual Appliance versions prior to 8.4.0.512, Dell EMC SMIS versions prior to 8.4.0.6, Dell EMC VMAX Embedded Management (eManagement) versions prior to and including 1.4.0.347, Dell EMC VNX2 Operating Environment (OE) for File versions prior to 8.1.9.231, Dell EMC VNX2 Operating Environment (OE) for Block versions prior to 05.33.009.5.231, Dell EMC VNX1 Operating Environment (OE) for File versions prior to 7.1.82.0, Dell EMC VNX1 Operating Environment (OE) for Block versions prior to 05.32.000.5.225, Dell EMC VNXe3200 Operating Environment (OE) all versions, Dell EMC VNXe1600 Operating Environment (OE) versions prior to 3.1.9.9570228, Dell EMC VNXe 3100/3150/3300 Operating Environment (OE) all versions, Dell EMC ViPR SRM versions 3.7, 3.7.1, 3.7.2 (only if using Dell EMC Host Interface for Windows), Dell EMC ViPR SRM versions 4.0, 4.0.1, 4.0.2, 4.0.3 (only if using Dell EMC Host Interface for Windows), Dell EMC XtremIO versions 4.x, Dell EMC VMAX eNAS version 8.x, Dell EMC Unity Operating Environment (OE) versions prior to 4.3.0.1522077968, ECOM is affected by a XXE injection vulnerability due to the configuration of the XML parser shipped with the product. XXE Injection attack may occur when XML input containing a reference to an external entity (defined by the attacker) is processed by an affected XML parser. XXE Injection may allow attackers to gain unauthorized access to files containing sensitive information or may be used to cause denial-of-service.
What
In Dell EMC Unisphere for VMAX Virtual Appliance versions prior to 8.4.0.8, Dell EMC Solutions Enabler Virtual Appliance versions prior to 8.4.0.8, Dell EMC VASA Provider Virtual Appliance versions prior to 8.4.0.512, Dell EMC SMIS versions prior to 8.4.0.6, Dell EMC VMAX Embedded Management (eManagement) versions prior to and including 1.4.0.347, Dell EMC VNX2 Operating Environment (OE) for File versions prior to 8.1.9.231, Dell EMC VNX2 Operating Environment (OE) for Block versions prior to 05.33.009.5.231, Dell EMC VNX1 Operating Environment (OE) for File versions prior to 7.1.82.0, Dell EMC VNX1 Operating Environment (OE) for Block versions prior to 05.32.000.5.225, Dell EMC VNXe3200 Operating Environment (OE) all versions, Dell EMC VNXe1600 Operating Environment (OE) versions prior to 3.1.9.9570228, Dell EMC VNXe 3100/3150/3300 Operating Environment (OE) all versions, Dell EMC ViPR SRM versions 3.7, 3.7.1, 3.7.2 (only if using Dell EMC Host Interface for Windows), Dell EMC ViPR SRM versions 4.0, 4.0.1, 4.0.2, 4.0.3 (only if using Dell EMC Host Interface for Windows), Dell EMC XtremIO versions 4.x, Dell EMC VMAX eNAS version 8.x, Dell EMC Unity Operating Environment (OE) versions prior to 4.3.0.1522077968, ECOM is affected by a XXE injection vulnerability due to the configuration of the XML parser shipped with the product. XXE Injection attack may occur when XML input containing a reference to an external entity (defined by the attacker) is processed by an affected XML parser. XXE Injection may allow attackers to gain unauthorized access to files containing sensitive information or may be used to cause denial-of-service.
Why
The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.
How
An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may obtain information outside the intended access boundary.
What
In Dell EMC Unisphere for VMAX Virtual Appliance versions prior to 8.4.0.8, Dell EMC Solutions Enabler Virtual Appliance versions prior to 8.4.0.8, Dell EMC VASA Provider Virtual Appliance versions prior to 8.4.0.512, Dell EMC SMIS versions prior to 8.4.0.6, Dell EMC VMAX Embedded Management (eManagement) versions prior to and including 1.4.0.347, Dell EMC VNX2 Operating Environment (OE) for File versions prior to 8.1.9.231, Dell EMC VNX2 Operating Environment (OE) for Block versions prior to 05.33.009.5.231, Dell EMC VNX1 Operating Environment (OE) for File versions prior to 7.1.82.0, Dell EMC VNX1 Operating Environment (OE) for Block versions prior to 05.32.000.5.225, Dell EMC VNXe3200 Operating Environment (OE) all versions, Dell EMC VNXe1600 Operating Environment (OE) versions prior to 3.1.9.9570228, Dell EMC VNXe 3100/3150/3300 Operating Environment (OE) all versions, Dell EMC ViPR SRM versions 3.7, 3.7.1, 3.7.2 (only if using Dell EMC Host Interface for Windows), Dell EMC ViPR SRM versions 4.0, 4.0.1, 4.0.2, 4.0.3 (only if using Dell EMC Host Interface for Windows), Dell EMC XtremIO versions 4.x, Dell EMC VMAX eNAS version 8.x, Dell EMC Unity Operating Environment (OE) versions prior to 4.3.0.1522077968, ECOM is affected by a XXE injection vulnerability due to the configuration of the XML parser shipped with the product. XXE Injection attack may occur when XML input containing a reference to an external entity (defined by the attacker) is processed by an affected XML parser. XXE Injection may allow attackers to gain unauthorized access to files containing sensitive information or may be used to cause denial-of-service.
Why
The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.
How
An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may obtain information outside the intended access boundary.
02
Exploit reality and attack path
CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.
Observed exploitation No confirmed evidence
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.
Public PoC / exploit material None recorded
?
Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.
- Likely attack path
- a network path → Improper Restriction of XML External Entity Reference → obtain information outside the intended access boundary
- Attack surface
- Network
- Privileges required
- None: unauthenticated exploitation is possible
- User interaction
- None
- Attack complexity
- Low: no specialised conditions are recorded
- Security boundary
- Unchanged: impact remains within the vulnerable component's security authority
- Weakness
?
CWE means Common Weakness Enumeration: a standard category for the underlying weakness. - CWE-611 ↗
CWE-611: Improper Restriction of XML External Entity Reference. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.
- CVSS vector
?
CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity. CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCommon Vulnerability Scoring System 3.0: the compact vector below is decoded into plain language.
AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.- Post-exploitation / living off the land
- No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
03
Patch and workaround
Operational remediation based on structured source evidence.
- Status
?
Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change. - Fix not verified
- Affected
- Dell EMC Unisphere for VMAX Virtual Appliance, Dell EMC Solutions Enabler Virtual Appliance, Dell EMC VASA Provider Virtual Appliance, Dell EMC SMIS, Dell EMC VMAX Embedded Management (eManagement), Dell EMC VNX2 Operating Environment (OE) for File, Dell EMC VNX2 Operating Environment (OE) for Block, Dell EMC VNX1 Operating Environment (OE) for File, Dell EMC VNX1 Operating Environment (OE) for Block, Dell EMC VNXe3200 Operating Environment (OE), Dell EMC VNXe1600 Operating Environment (OE), Dell EMC VNXe 3100/3150/3300 Operating Environment (OE), Dell EMC ViPR SRM, Dell EMC ViPR SRM, Dell EMC XtremIO, Dell EMC VMAX eNAS, Dell EMC Unity Operating Environment (OE): Dell EMC Unisphere for VMAX Virtual Appliance versions prior to 8.4.0.8, Dell EMC Solutions Enabler Virtual Appliance versions prior to 8.4.0.8, Dell EMC VASA Provider Virtual Appliance versions prior to 8.4.0.512, Dell EMC SMIS versions prior to 8.4.0.6, Dell EMC VMAX Embedded Management (eManagement) versions prior to and including 1.4.0.347, Dell EMC VNX2 Operating Environment (OE) for File versions prior to 8.1.9.231, Dell EMC VNX2 Operating Environment (OE) for Block versions prior to 05.33.009.5.231, Dell EMC VNX1 Operating Environment (OE) for File versions prior to 7.1.82.0, Dell EMC VNX1 Operating Environment (OE) for Block versions prior to 05.32.000.5.225, Dell EMC VNXe3200 Operating Environment (OE) all versions, Dell EMC VNXe1600 Operating Environment (OE) versions prior to 3.1.9.9570228, Dell EMC VNXe 3100/3150/3300 Operating Environment (OE) all versions, Dell EMC ViPR SRM versions 3.7, 3.7.1, 3.7.2 (only if using Dell EMC Host Interface for Windows), Dell EMC ViPR SRM versions ...[truncated*]
- Fixed
- No fixed version is explicitly recorded in the structured CVE data.
- Action
- No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
- Workaround
- No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04
Evidence and provenance
Published 30 Apr 2018 · Last source change 16 Sept 2024, 17:58 UTC · CWE-611 · Improper Restriction of XML External Entity Reference
CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source FIRST · tracked since 2026-09-01
?
The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.European sourceENISA EUVD · EUVD-2018-11821
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceNIST NVD
NVD statusNVD modified after enrichment
Core structured fields are present and their contributing authorities are shown above.
Material change intelligence
View recent updates ↗What changed after publication
- ENISA EUVD mappingEUVD-2018-11821 was added to the official ENISA EUVD mapping for this CVE.ENISA EUVD ↗
- Before
- not recorded
- After
- {"euvdId":"EUVD-2018-11821"}
- SeveritySeverity changed from Unknown to Critical.NIST NVD ↗
- Before
- Unknown
- After
- Critical
- CVSS scoreCVSS score changed from not recorded to 9.8 (CVSS 3.0 · NIST NVD · CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).NIST NVD ↗
- Before
- not recorded
- After
- 9.8 (CVSS 3.0 · NIST NVD · CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
- Catalogue recordCVE added to the BlackTree catalogue.CNA ↗
Technical terms and abbreviations used in this report
- CVE
- Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
- CVSS
- Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
- EPSS
- Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
- CWE
- Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
- CNA
- CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
- CISA ADP
- Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
- NVD
- National Vulnerability Database: NIST's enrichment service for CVE records.
- CERT / CSIRT
- A computer security incident response team that publishes warnings or coordinates incident response.
- PoC
- Proof of concept: public material that demonstrates or helps reproduce exploitation.
- CSAF
- Common Security Advisory Framework: a machine-readable format for security advisories.
- LoTL
- Living off the land: abuse of legitimate tools or system functions during an attack.