Search criteria
1 vulnerability by sticky-notes
CVE-2021-47973 (GCVE-0-2021-47973)
Vulnerability from cvelistv5 – Published: 2026-05-16 15:26 – Updated: 2026-05-18 12:39
VLAI
Title
Sticky Notes Widget 3.0.6 Denial of Service via Buffer Overflow
Summary
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.
Severity
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://www.exploit-db.com/exploits/49978 | exploit |
| https://www.vulncheck.com/advisories/sticky-notes… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| sticky-notes | Sticky Notes Widget |
Affected:
3.0.6
|
Date Public
2021-07-06 00:00
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2021-47973",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-18T12:39:45.677256Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-18T12:39:53.873Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "Sticky Notes Widget",
"vendor": "sticky-notes",
"versions": [
{
"status": "affected",
"version": "3.0.6"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Geovanni Ruiz"
}
],
"datePublic": "2021-07-06T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "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",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS"
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-789",
"description": "Memory Allocation with Excessive Size Value",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-16T15:26:13.702Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "ExploitDB-49978",
"tags": [
"exploit"
],
"url": "https://www.exploit-db.com/exploits/49978"
},
{
"name": "VulnCheck Advisory: Sticky Notes Widget 3.0.6 Denial of Service via Buffer Overflow",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/sticky-notes-widget-denial-of-service-via-buffer-overflow"
}
],
"title": "Sticky Notes Widget 3.0.6 Denial of Service via Buffer Overflow",
"x_generator": {
"engine": "vulncheck"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2021-47973",
"datePublished": "2026-05-16T15:26:13.702Z",
"dateReserved": "2026-05-16T14:32:06.209Z",
"dateUpdated": "2026-05-18T12:39:53.873Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}