Security readout for executives and security teams
Plain-English summary
Snow Agent for Windows had a local flaw that could let a non-admin user delete arbitrary files. The main business risk is disruption or damage on managed Windows endpoints, not remote takeover. The source bundle does not provide a named patch version or workaround.
Executive priority
Treat as a moderate endpoint availability risk. It is not described as remotely exploitable, but affected enterprise agents may sit broadly across Windows fleets. Prioritize inventory and vendor-confirmed remediation, especially on shared workstations, privileged admin systems, and high-value operational endpoints.
Technical view
CVE-2021-41562 affects Snow Agent for Windows versions 5.0.0 through 6.7.1. The CVSS 3.1 score is 6.1 with local access, low complexity, low privileges, no user interaction, no confidentiality impact, low integrity impact, and high availability impact. It is associated with CWE-64.
Likely exposure
Exposure is limited to Windows systems running Snow Agent for Windows in the affected range. Systems are most relevant where local non-admin users can sign in or execute code. Remote-only exposure is not supported by the provided sources.
Exploitation context
The source bundle marks CISA KEV as false and provides no cited evidence of active exploitation. The vulnerability requires local low-privileged access, so risk depends on endpoint access, user population, and value of files reachable by the agent behavior.
Researcher notes
Evidence is sparse in the provided bundle. The record identifies arbitrary file deletion by a non-admin local user and CWE-64, but does not include root cause details, exploit prerequisites beyond local low privilege, patch version, or workaround. Avoid assuming exploitation or fixes not named by sources.
Mitigation direction
- Inventory Windows endpoints running Snow Agent for Windows.
- Prioritize hosts with versions 5.0.0 through 6.7.1.
- Check Snow vendor guidance for fixed versions or supported workarounds.
- Upgrade through vendor-supported channels when a fixed version is confirmed.
- Review local user access on affected Windows hosts.
- Monitor for unusual file deletion events on managed endpoints.
Validation and detection
- Confirm installed Snow Agent for Windows versions from endpoint inventory.
- Compare findings against the affected range in the CVE record.
- Check whether non-admin users can access affected endpoints.
- Review endpoint and EDR telemetry for abnormal deletions.
- Verify Snow advisory or support notes before declaring remediation complete.
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-64: 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-2021-41562 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
- Medium
- CVSS
- 6.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/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:N/S:U/C:N/I:L/A:H1.84.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://community.snowsoftware.com/s/group/0F91r000000QUhPCAW/news-updatesCVE 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.
Windows Shortcut Following (.LNK)
Windows Shortcut Following (.LNK) represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.