Security readout for executives and security teams
Plain-English summary
CVE-2021-36665 is a local privilege escalation issue in Druva 6.9.0 for macOS involving inSyncUpgradeDaemon. A user or malware already on a Mac could potentially gain higher local privileges. The source bundle does not provide CVSS, CWE, a confirmed fixed version, or evidence of active exploitation.
Executive priority
Treat this as a targeted endpoint hardening priority, not an internet-scale emergency. The business risk is higher where Druva is installed on privileged Macs, because local compromise could become deeper system control.
Technical view
The reported flaw affects Druva 6.9.0 for macOS and involves privilege escalation through inSyncUpgradeDaemon. Druva’s advisory reference is for inSync Client 7.0.1 and before, but the bundle’s affected-product data is incomplete. No exploit mechanics, patch details, or CVSS vector are provided in the supplied evidence.
Likely exposure
Exposure is most likely on macOS endpoints running Druva inSync Client, especially version 6.9.0. Druva’s advisory title suggests concern through 7.0.1 and before, but exact affected versions should be confirmed with Druva guidance.
Exploitation context
This is not listed in CISA KEV, and the supplied sources do not claim active exploitation. The vulnerability requires local presence or local code execution first, making it most relevant after phishing, malware execution, or insider misuse.
Researcher notes
Evidence is limited to the CVE description, Druva advisory URL, and an external write-up URL. Avoid assuming affected versions beyond the stated Druva 6.9.0 macOS issue and the advisory title’s 7.0.1-and-before scope without reading vendor details.
Mitigation direction
- Identify macOS endpoints running Druva inSync Client.
- Check Druva’s security advisory for the supported fixed or remediated version.
- Upgrade or remove affected Druva clients according to vendor guidance.
- Prioritize Macs used by administrators or privileged business users.
- Monitor endpoint privilege changes and suspicious daemon interactions.
Validation and detection
- Inventory Druva inSync Client versions on managed macOS endpoints.
- Confirm whether any systems run version 6.9.0.
- Review Druva’s advisory for version scope and remediation status.
- Check EDR logs for unusual local privilege escalation activity.
- Verify remediated endpoints report the expected client version.
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-2021-36665 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.