Security readout for executives and security teams
Plain-English summary
CVE-2021-36319 is a low-severity information exposure issue in Dell Networking OS10. A low-privileged authenticated user can access SNMP authentication failure messages. The sources do not show unauthenticated remote access, data modification, service disruption, or active exploitation.
Executive priority
Handle through normal network maintenance unless the affected switches are shared with many low-privileged operators or sensitive SNMP details could aid follow-on activity. This is not a crisis-level issue based on the supplied evidence.
Technical view
Dell Networking OS10 10.4.3.x, 10.5.0.x, and 10.5.1.x are listed as affected. CVSS 3.1 is 3.3 with local attack vector, low complexity, low privileges required, no user interaction, and low confidentiality impact only. The CVE maps to CWE-665.
Likely exposure
Exposure is likely limited to organizations running the affected Dell OS10 version branches where low-privileged authenticated users can access the relevant local context. Internet-wide exposure is not supported by the supplied evidence.
Exploitation context
The source bundle does not identify public exploitation, proof-of-concept activity, or CISA KEV listing. Treat exploitation status as unconfirmed absent additional vendor or threat intelligence reporting.
Researcher notes
The record is sparse. It establishes affected OS10 branches, impact type, privileges, and CVSS, but does not include exploit details, fixed versions, or explicit mitigations in the provided text. Avoid overstating reachability or exploitability.
Mitigation direction
- Review Dell advisory KB 000193076 for official remediation or fixed-version guidance.
- Inventory Dell Networking OS10 devices and identify affected version branches.
- Restrict low-privileged access to switch management environments.
- Monitor access to SNMP authentication failure information where logging permits.
- Prioritize upgrade planning if Dell lists a supported fixed OS10 release.
Validation and detection
- Confirm whether any Dell OS10 devices run 10.4.3.x, 10.5.0.x, or 10.5.1.x.
- Review user roles with local or management-plane access to affected devices.
- Check whether SNMP authentication failure messages are exposed to low-privileged users.
- Verify remediation status against Dell KB 000193076 before closing the finding.
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-665: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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-2021-36319 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
- Low
- CVSS
- 3.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
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:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N1.81.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
3.3LowVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.dell.com/support/kbdoc/en-us/000193076CVE 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 Initialization
Improper Initialization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.