Security readout for executives and security teams
Plain-English summary
CVE-2021-47972 is an availability issue in Sticky Notes Color Widgets 1.4.2. The application can crash or stop responding when note fields contain excessively long character strings. The business impact is disruption of users who rely on the app, not data theft or system takeover based on the provided sources.
Executive priority
Treat as a targeted availability risk, not a breach indicator. Prioritize if the app is broadly installed, used in critical workflows, or unmanaged across endpoints. Otherwise handle through normal endpoint software hygiene.
Technical view
The reported weakness maps to CWE-789, uncontrolled memory allocation. Sources describe a denial of service condition triggered by very large note content. The CVSS 4.0 score is 8.7 with high availability impact and no confidentiality or integrity impact identified in the supplied record.
Likely exposure
Exposure appears limited to environments where Sticky Notes Color Widgets version 1.4.2 is installed or permitted. The bundle does not identify other affected versions, platforms, cloud services, or downstream products.
Exploitation context
A public ExploitDB reference exists, so proof-of-concept information is public. The CVE is not listed as KEV in the bundle, and no provided source states active exploitation in the wild.
Researcher notes
Evidence supports one affected product and version: Sticky Notes Color Widgets 1.4.2. The bundle does not name a vendor patch, fixed version, platform scope, or confirmed exploitation. Keep analysis constrained to denial of service and availability impact.
Mitigation direction
- Inventory endpoints for Sticky Notes Color Widgets 1.4.2.
- Check vendor and CVE guidance for fixed or unaffected versions.
- Remove or disable version 1.4.2 where not business-required.
- Use application allowlisting to prevent unmanaged installs.
- Back up user note data before removal or replacement.
Validation and detection
- Confirm installed application name and version through asset inventory.
- Review crash reports for repeated Sticky Notes Color Widgets failures.
- Check whether affected users rely on the app for business workflows.
- Track the CVE record and VulnCheck advisory for updated remediation.
- Avoid production testing that intentionally crashes user applications.
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-789: 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-2021-47972 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
- 8.7 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
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
2 official scoresWe 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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N——VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6VulnCheckVulnerability scoring details
Base CVSS 4.0 score
8.7HighVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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
- ExploitDB-49957CVE reference, VulnCheck · exploit
- VulnCheck Advisory: Sticky Notes & Color Widgets 1.4.2 Denial of ServiceCVE reference, VulnCheck · third-party-advisory
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.
Memory Allocation with Excessive Size Value
Memory Allocation with Excessive Size Value represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.