Security readout for executives and security teams
Plain-English summary
Dell EMC Avamar Server has a privilege-management flaw in its AUI interface. An already highly privileged malicious user could access AUI information and perform unauthorized AUI operations. This is not a remote unauthenticated takeover, but it matters because backup infrastructure is operationally sensitive.
Executive priority
Treat as a controlled but important backup-platform risk. It does not appear to be actively exploited from the provided sources, but affected Avamar systems should be identified and remediated through Dell guidance because privileged misuse could affect backup administration and resilience.
Technical view
CVE-2021-36316 is CWE-269 improper privilege management in Dell EMC Avamar Server AUI, affecting versions 18.2, 19.1, 19.2, 19.3, and 19.4. CVSS 3.1 is 6.7: network reachable, low complexity, high privileges required, no user interaction, with low confidentiality and high integrity/availability impact.
Likely exposure
Exposure is likely limited to organizations running affected Dell EMC Avamar Server versions where AUI is reachable by high-privileged users. Risk increases if privileged Avamar accounts are broadly assigned, shared, weakly monitored, or accessible from less trusted networks.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation requires high privileges, making the main scenarios a malicious insider, misused administrator access, or an attacker who already compromised a privileged Avamar account.
Researcher notes
Do not assume unauthenticated access or public exploitation from the available evidence. Focus analysis on authorization boundaries inside AUI, privileged role behavior, exposed administrative surfaces, and whether Dell advisory 000193369 names fixed builds or compensating controls.
Mitigation direction
- Review Dell advisory 000193369 for vendor-approved fixes or workarounds.
- Inventory Avamar Server instances running versions 18.2 through 19.4.
- Restrict AUI access to trusted administrative networks and users.
- Reduce and review high-privileged Avamar/AUI account assignments.
- Monitor AUI activity for unexpected administrative operations.
Validation and detection
- Confirm whether any Avamar Server runs an affected version.
- Verify AUI is not exposed beyond intended administrative paths.
- Review privileged Avamar account lists for unnecessary access.
- Check AUI and administrative logs for unusual actions.
- Confirm Dell guidance has been evaluated and applied where relevant.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-269: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-36316 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 6.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H1.25.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.7MediumVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.dell.com/support/kbdoc/000193369CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Privilege Management
Improper Privilege Management represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.