CVE-2026-5044
A security vulnerability has been detected in Belkin F9K1122 1.00.33. This affects the function formSetSystemSettings of the file /goform/formSetSystemSettings of the component Setting Handler. Such manipulation of the argument webpage leads to stack-based buffer overflow. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
CVSS
- Version: 4.0
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Base score: 7.4
Exploitation probability (EPSS)
- Probability of exploitation in the next 30 days: 1.06%
- Percentile among all scored CVEs: 63
- Score date: 10/5/2026
EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).
🎯 ATT&CK techniques
How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.
- Exploitation
T1210Exploitation of Remote Serviceslateral movement75 % - Primary impact
T1059Command and Scripting Interpreterexecution70 % - Secondary impact
T1068Exploitation for Privilege Escalationprivilege escalation65 %
Buffer overflow en handler remoto con PR:L (red+privilegios); acceso local conduce a ejecución arbitraria. CWE-787 confirma escritura fuera de límites (stack overflow).
Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.
🛡️ ATT&CK mitigations that cover these techniques
Affected technologies (1)
CWEs
- CWE-119, CWE-121
- CWE-787
References
Raw JSON (NVD)
Show
{
"id": "CVE-2026-5044",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-5044",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"version": "2.0.3",
"timestamp": "2026-03-30T11:48:13.835585Z"
}
}
],
"cvssMetricV2": [
{
"type": "Secondary",
"source": "cna@vuldb.com",
"cvssData": {
"version": "2.0",
"baseScore": 9,
"accessVector": "NETWORK",
"vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
"authentication": "SINGLE",
"integrityImpact": "COMPLETE",
"accessComplexity": "LOW",
"availabilityImpact": "COMPLETE",
"confidentialityImpact": "COMPLETE"
},
"acInsufInfo": false,
"impactScore": 10,
"baseSeverity": "HIGH",
"obtainAllPrivilege": false,
"exploitabilityScore": 8,
"obtainUserPrivilege": false,
"obtainOtherPrivilege": false,
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"type": "Secondary",
"source": "cna@vuldb.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 8.8,
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"integrityImpact": "HIGH",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "HIGH",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
},
"impactScore": 5.9,
"exploitabilityScore": 2.8
}
],
"cvssMetricV40": [
{
"type": "Secondary",
"source": "cna@vuldb.com",
"cvssData": {
"Safety": "NOT_DEFINED",
"version": "4.0",
"Recovery": "NOT_DEFINED",
"baseScore": 7.4,
"Automatable": "NOT_DEFINED",
"attackVector": "NETWORK",
"baseSeverity": "HIGH",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"exploitMaturity": "PROOF_OF_CONCEPT",
"providerUrgency": "NOT_DEFINED",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "LOW",
"subIntegrityImpact": "NONE",
"vulnIntegrityImpact": "HIGH",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"vulnAvailabilityImpact": "HIGH",
"availabilityRequirement": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"subConfidentialityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"confidentialityRequirement": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED"
}
}
]
},
"affected": [
{
"source": "cna@vuldb.com",
"affectedData": [
{
"cpes": [
"cpe:2.3:o:belkin:f9k1122_firmware:*:*:*:*:*:*:*:*"
],
"vendor": "Belkin",
"modules": [
"Setting Handler"
],
"product": "F9K1122",
"versions": [
{
"status": "affected",
"version": "1.00.33"
}
]
}
]
}
],
"published": "2026-03-29T13:17:03.573",
"references": [
{
"url": "https://github.com/Litengzheng/vul_db/blob/main/Belkin/vul_155/README.md",
"tags": [
"Exploit",
"Third Party Advisory"
],
"source": "cna@vuldb.com"
},
{
"url": "https://vuldb.com/submit/779125",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"source": "cna@vuldb.com"
},
{
"url": "https://vuldb.com/vuln/353967",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"source": "cna@vuldb.com"
},
{
"url": "https://vuldb.com/vuln/353967/cti",
"tags": [
"Permissions Required",
"VDB Entry"
],
"source": "cna@vuldb.com"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "cna@vuldb.com",
"description": [
{
"lang": "en",
"value": "CWE-119"
},
{
"lang": "en",
"value": "CWE-121"
}
]
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "CWE-787"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A security vulnerability has been detected in Belkin F9K1122 1.00.33. This affects the function formSetSystemSettings of the file /goform/formSetSystemSettings of the component Setting Handler. Such manipulation of the argument webpage leads to stack-based buffer overflow. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way."
},
{
"lang": "es",
"value": "Una vulnerabilidad de seguridad ha sido detectada en Belkin F9K1122 1.00.33. Esto afecta a la función formSetSystemSettings del archivo /goform/formSetSystemSettings del componente Gestor de Configuración. Dicha manipulación del argumento webpage conduce a un desbordamiento de búfer basado en pila. El ataque puede ser ejecutado de forma remota. El exploit ha sido divulgado públicamente y puede ser utilizado. El proveedor fue contactado con antelación sobre esta divulgación, pero no respondió de ninguna manera."
}
],
"lastModified": "2026-06-17T10:58:20.073",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:belkin:f9k1122_firmware:1.00.33:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "DE458590-4E31-4DE9-A746-F8329BEA5230"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:belkin:f9k1122:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "5172CB1F-4409-4E22-9A66-91CF4F11FCD1"
}
],
"operator": "OR"
}
],
"operator": "AND"
}
],
"sourceIdentifier": "cna@vuldb.com"
}