Security readout for executives and security teams
Plain-English summary
CVE-2021-36666 is a reported local privilege escalation issue in Druva inSync for macOS. A local attacker could gain higher privileges through the inSyncDecommission component. This matters most on shared, developer, or already-compromised Macs where local code execution or user access is plausible.
Executive priority
Prioritize remediation where Druva inSync is deployed on macOS endpoints with multiple users, sensitive data, or elevated business access. The business risk is post-compromise privilege expansion, not remote initial access based on the provided evidence.
Technical view
The CVE description identifies Druva 6.9.0 for macOS and privilege escalation via inSyncDecommission. The source bundle also cites Druva’s advisory for inSync Client 7.0.1 and before, but no CVSS, CWE, or detailed affected CPE data is provided here. Treat exact affected-version scope as vendor-confirmed.
Likely exposure
Organizations using Druva inSync Client on macOS are the relevant exposure group. The provided sources explicitly name Druva 6.9.0 for macOS, while the vendor advisory title references inSync Client 7.0.1 and before.
Exploitation context
No CISA KEV listing is provided, and the bundle does not establish active exploitation. Public discussion exists through a referenced research write-up, but this assessment should not infer exploitation in the wild without further evidence.
Researcher notes
Evidence is limited: the CVE record gives a short description, no CVSS, no CWE, and sparse affected-product metadata. Use Druva’s advisory as the authoritative source for fixed versions and affected scope, and avoid assuming active exploitation.
Mitigation direction
- Review Druva’s advisory for the vendor-approved fixed version or workaround.
- Inventory macOS endpoints running Druva inSync Client.
- Prioritize remediation for version 6.9.0 and advisory-covered older clients.
- Limit local interactive access on affected Macs until remediated.
- Monitor endpoint privilege changes and unusual Druva client activity.
Validation and detection
- Confirm installed Druva inSync Client versions across macOS assets.
- Check whether affected hosts include the inSyncDecommission component.
- Compare findings against Druva’s advisory scope.
- Verify remediated endpoints report the vendor-recommended fixed version.
- Review endpoint logs for unexpected local privilege escalation indicators.
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.
CVE-2021-36666 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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.
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://docs.druva.com/Knowledge_Base/Security_Update/Security_Advisory_for_inSync_Client_7.0.1_and_beforeCVE reference, mitre
- https://imhotepisinvisible.com/druva-lpe/CVE reference, mitre
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.