CVE-2026-21807 (GCVE-0-2026-21807)
Vulnerability from cvelistv5 – Published: 2026-08-26 22:02 – Updated: 2026-08-26 22:02
VLAI
EPSS
VEX
Title
HCL BigFix Quantum Risk Analyzer is affected by a stack-based buffer overflow
Summary
HCL BigFix Quantum Risk Analyzer binary lacks several critical, industry-standard hardening protections that could allow an attacker to cause a stack-based buffer overflow.
Severity
CWE
- CWE-121 - Stack-based buffer overflow
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| HCLSoftware | BigFix Quantum Risk Analyzer |
Affected:
2.0.1.47
|
guessed |
Date Public
2026-08-26 21:00
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "BigFix Quantum Risk Analyzer",
"vendor": "HCLSoftware",
"versions": [
{
"status": "affected",
"version": "2.0.1.47"
}
]
}
],
"datePublic": "2026-08-26T21:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "HCL BigFix Quantum Risk Analyzer binary lacks several critical, industry-standard hardening protections that could allow an attacker to cause a stack-based buffer overflow."
}
],
"value": "HCL BigFix Quantum Risk Analyzer binary lacks several critical, industry-standard hardening protections that could allow an attacker to cause a stack-based buffer overflow."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 3.9,
"baseSeverity": "LOW",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-121",
"description": "CWE-121 Stack-based buffer overflow",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-26T22:02:27.455Z",
"orgId": "1e47fe04-f25f-42fa-b674-36de2c5e3cfc",
"shortName": "HCL"
},
"references": [
{
"url": "https://support.hcl-software.com/csm?id=kb_article\u0026sysparm_article=KB0133289"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "HCL BigFix Quantum Risk Analyzer is affected by a stack-based buffer overflow",
"x_generator": {
"engine": "Vulnogram 1.0.4"
}
}
},
"cveMetadata": {
"assignerOrgId": "1e47fe04-f25f-42fa-b674-36de2c5e3cfc",
"assignerShortName": "HCL",
"cveId": "CVE-2026-21807",
"datePublished": "2026-08-26T22:02:27.455Z",
"dateReserved": "2026-01-05T16:08:06.682Z",
"dateUpdated": "2026-08-26T22:02:27.455Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-21807",
"date": "2026-08-27",
"epss": "0.00092",
"percentile": "0.00572"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-21807\",\"sourceIdentifier\":\"psirt@hcl.com\",\"published\":\"2026-08-26T23:17:12.713\",\"lastModified\":\"2026-08-26T23:17:12.713\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"HCL BigFix Quantum Risk Analyzer binary lacks several critical, industry-standard hardening protections that could allow an attacker to cause a stack-based buffer overflow.\"}],\"affected\":[{\"source\":\"psirt@hcl.com\",\"affectedData\":[{\"vendor\":\"HCLSoftware\",\"product\":\"BigFix Quantum Risk Analyzer\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"2.0.1.47\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@hcl.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L\",\"baseScore\":3.9,\"baseSeverity\":\"LOW\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":0.5,\"impactScore\":3.4}]},\"weaknesses\":[{\"source\":\"psirt@hcl.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-121\"}]}],\"references\":[{\"url\":\"https://support.hcl-software.com/csm?id=kb_article\u0026sysparm_article=KB0133289\",\"source\":\"psirt@hcl.com\"}]}}"
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Loading…
Loading…