What’s Vulnerable › Vulnerabilities

CVE-2021-47973: Sticky Notes Widget 3.0.6 Denial of Service via Buffer Overflow

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-16 · updated 2026-06-17
• Weakness: CWE-789

Description

Sticky Notes Widget 3.0.6 contains a denial of service vulnerability that allows attackers to crash the application by pasting excessively long character strings into note fields. Attackers can generate a payload containing 350000 repeated characters and paste it twice into a new note to trigger an application crash on iOS devices.

Affected products

• sticky-notes Sticky Notes Widget: 3.0.6

References

• https://www.exploit-db.com/exploits/49978
• https://www.vulncheck.com/advisories/sticky-notes-widget-denial-of-service-via-buffer-overflow

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