Security readout for executives and security teams
Plain-English summary
Some Dell client systems restored from older Dell OS recovery images may have unsafe inherited permissions on the root folder. A low-privileged local user could use that misconfiguration to access sensitive areas they should not reach. The risk is serious where shared or lightly controlled endpoints were rebuilt from those older images.
Executive priority
Treat as high priority for Dell endpoint fleets with historical rebuilds from old recovery media. It is not a remote internet-facing flaw, but it can undermine endpoint trust after local access and may affect sensitive data or system integrity.
Technical view
CVE-2020-5343 is a CWE-277 insecure inherited permissions issue affecting Dell Client platforms restored with Dell OS recovery images downloaded before December 20, 2019. CVSS 3.1 is 7.3 high, with local attack vector, low complexity, low privileges, user interaction required, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is likely limited to Dell client platforms restored using Dell OS recovery media downloaded before December 20, 2019. The source bundle lists Dell CPG SW with unspecified versions, so product and version granularity is incomplete.
Exploitation context
Sources describe local authenticated exploitation by a low-privileged malicious user. The CVSS vector includes user interaction required. CISA KEV is false in the provided data, and no cited source states active exploitation.
Researcher notes
The public evidence is sparse. The CVE describes the condition, impact, CVSS, and recovery-image date threshold, but affected versions and concrete remediation details are not present in the provided bundle beyond the Dell advisory reference.
Mitigation direction
- Inventory Dell clients rebuilt from Dell recovery images before December 20, 2019.
- Review Dell advisory SLN321036 for the vendor-approved remediation path.
- Restrict local interactive access on potentially affected endpoints until remediated.
- Avoid reusing old Dell recovery images unless Dell guidance explicitly approves them.
- If Dell instructs, rebuild or correct affected systems using current vendor-approved recovery media.
Validation and detection
- Confirm whether each Dell endpoint was restored from affected recovery media.
- Check root folder permissions against Dell or enterprise baseline expectations.
- Verify low-privileged local users cannot access unauthorized root-folder content.
- Document remediation status and evidence for each potentially affected endpoint.
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-277: 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-2020-5343 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
- High
- CVSS
- 7.3 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/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:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H1.35.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.3HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://www.dell.com/support/article/SLN321036CVE 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.
Insecure Inherited Permissions
Insecure Inherited Permissions represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.