Security readout for executives and security teams
Plain-English summary
CVE-2021-32415 is a local privilege escalation issue in installers created by EXEMSI MSI Wrapper versions before 10.0.50, at least back to 6.0.91. A low-privileged local user could potentially gain higher system privileges through a vulnerable installer. This is important where affected installers are deployed on employee endpoints or servers.
Executive priority
Prioritize remediation where vulnerable installers are broadly deployed, accessible to standard users, or used on privileged management servers. Treat this as high priority for endpoint and software packaging teams, but current provided sources do not support claims of active exploitation.
Technical view
The CVE describes EXEMSI MSI Wrapper introducing a local privilege escalation vulnerability into MSI installers it creates. CVSS 3.1 is 7.8, with local access, low complexity, low privileges, no user interaction, and high confidentiality, integrity, and availability impact. The record does not provide CWE details or precise affected downstream products.
Likely exposure
Organizations are exposed if they use EXEMSI MSI Wrapper versions before 10.0.50, or deploy installers generated by those versions. Exposure may also exist through third-party software packages built with affected wrapper versions. The provided CVE data does not enumerate affected products or CPEs.
Exploitation context
This is a local privilege escalation, so an attacker generally needs existing local access or code execution as a low-privileged user. The source bundle does not show CISA KEV listing or active exploitation evidence. The Improsec reference discusses the issue in a NinjaRMM-related context.
Researcher notes
Evidence is limited to the CVE description, CVSS vector, and the Improsec reference. The affected product field is not populated with CPEs, and no CWE is provided. Focus research on installer provenance, wrapper version identification, and downstream software packaging exposure rather than assuming all MSI installers are affected.
Mitigation direction
- Upgrade EXEMSI MSI Wrapper to version 10.0.50 or later where used.
- Identify MSI installers built with EXEMSI versions 6.0.91 through before 10.0.50.
- Rebuild and redeploy affected internal installers using a fixed wrapper version.
- Ask third-party vendors whether their installers were built with vulnerable EXEMSI versions.
- Follow current EXEMSI and affected vendor guidance if additional fixes are published.
Validation and detection
- Inventory software build pipelines for EXEMSI MSI Wrapper usage and version history.
- Review deployed MSI packages to identify those generated during vulnerable wrapper use.
- Confirm rebuilt installers were created with EXEMSI MSI Wrapper 10.0.50 or later.
- Check endpoint management repositories for older vulnerable installer packages.
- Monitor vendor advisories for products distributed using EXEMSI-generated installers.
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.
Privilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-32415 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
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/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.
SSVC decision data
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:H/I:H/A:H1.85.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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://improsec.com/tech-blog/privilege-escalation-vulnerability-in-ninjarmmCVE 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.