hbsa-2025-0003
MEDIUM CVSS 6.5 csaf_harmaninternational
Description
The Bluetooth Classic implementation on JBL Flip 4 devices with firmware version prior to 4.1.0 does not properly handle malformed LMP messages and causes the entire device to crash. Any attacker in radio range can exploit this vulnerability.
Timeline
- Published
- 2026-02-18 07:00 UTC
- Last Modified
- 2026-02-18
CVSS Details
CVSS details not available.
Affected Products
No product information available.
Weaknesses (CWE)
References
No references available.
Linked Vulnerabilities
No linked vulnerabilities found.
{
"document": {
"acknowledgments": [
{
"organization": "CERT@VDE",
"summary": "coordination",
"urls": [
"https://certvde.com"
]
},
{
"names": [
"Justus W. Perlwitz"
],
"organization": "JWP Consulting",
"summary": "reporting",
"urls": [
"https://www.jwpconsulting.net/"
]
}
],
"aggregate_severity": {
"namespace": "https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"text": "Medium (6.5)"
},
"category": "csaf_security_advisory",
"csaf_version": "2.0",
"distribution": {
"tlp": {
"label": "WHITE"
}
},
"lang": "en-GB",
"notes": [
{
"audience": "all",
"category": "summary",
"text": "The Bluetooth Classic implementation on JBL Flip 4 devices with firmware version prior to 4.1.0 does not properly\nhandle malformed LMP messages and causes the entire device to crash. Any attacker in radio range can\nexploit this vulnerability.",
"title": "Summary"
},
{
"audience": "all",
"category": "description",
"text": "Any attacker in radio range can send malicious messages to cause the device to crash.",
"title": "Impact"
},
{
"audience": "all",
"category": "description",
"text": "There is no known mitigation at this moment.",
"title": "Mitigation"
},
{
"audience": "all",
"category": "description",
"text": "The vulnerability is fixed in firmware version 4.1.0.",
"title": "Remediation"
},
{
"audience": "all",
"category": "description",
"text": "The JBL Flip 4 is a portable bluetooth speaker.",
"title": "Product Description"
}
],
"publisher": {
"category": "vendor",
"contact_details": "productsecurity@harman.com",
"name": "Harman International",
"namespace": "https://www.harman.com"
},
"references": [
{
"category": "external",
"summary": "CERT@VDE Security Advisories for Harman",
"url": "https://certvde.com/en/advisories/vendor/harmann/"
},
{
"category": "self",
"summary": "HBSA-2025-0003: JBL: DoS vulnerability in Flip 4 - HTML",
"url": "https://certvde.com/en/advisories/VDE-2025-090"
},
{
"category": "self",
"summary": "HBSA-2025-0003: JBL: DoS vulnerability in Flip 4 - CSAF",
"url": "https://harman.csaf-tp.certvde.com/.well-known/csaf/white/2026/hbsa-2025-0003.json"
},
{
"category": "external",
"summary": "Braktooth, a description of a family of security vulnerabilities in commercial BT stacks.",
"url": "https://asset-group.github.io/disclosures/braktooth/"
}
],
"title": "JBL: DoS vulnerability in Flip 4",
"tracking": {
"aliases": [
"VDE-2026-0001"
],
"current_release_date": "2026-02-18T07:00:00.000Z",
"generator": {
"date": "2026-02-12T14:20:52.263Z",
"engine": {
"name": "Secvisogram",
"version": "2.5.42"
}
},
"id": "HBSA-2025-0003",
"initial_release_date": "2026-02-18T07:00:00.000Z",
"revision_history": [
{
"date": "2026-02-18T07:00:00.000Z",
"number": "1.0.0",
"summary": "Initial release."
}
],
"status": "final",
"version": "1.0.0"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_name",
"name": "Flip 4",
"product": {
"name": "JBL Flip 4",
"product_id": "CSAFPID-11001",
"product_identification_helper": {
"skus": [
"6925281924439",
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}
],
"category": "product_family",
"name": "Hardware"
},
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "vers:semver/<4.1.0",
"product": {
"name": "JBL Flip 4 Firmware <4.1.0",
"product_id": "CSAFPID-21001",
"product_identification_helper": {
"model_numbers": [
"Flip 4"
]
}
}
},
{
"category": "product_version",
"name": "4.1.0",
"product": {
"name": "JBL Flip 4 Firmware 4.1.0",
"product_id": "CSAFPID-22001",
"product_identification_helper": {
"model_numbers": [
"Flip 4"
]
}
}
}
],
"category": "product_name",
"name": "Flip 4 "
}
],
"category": "product_family",
"name": "Firmware"
}
],
"category": "vendor",
"name": "JBL"
}
],
"relationships": [
{
"category": "installed_on",
"full_product_name": {
"name": "JBL Flip 4 Firmware <4.1.0 installed on JBL Flip 4",
"product_id": "CSAFPID-31001",
"product_identification_helper": {
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"050036337373",
"050036336123",
"050036336116",
"050036336130",
"050036337441",
"050036336109",
"050036336147"
]
}
},
"product_reference": "CSAFPID-21001",
"relates_to_product_reference": "CSAFPID-11001"
},
{
"category": "installed_on",
"full_product_name": {
"name": "JBL Flip 4 Firmware 4.1.0 installed on JBL Flip 4",
"product_id": "CSAFPID-32001",
"product_identification_helper": {
"skus": [
"6925281924439",
"6925281924415",
"6925281924422",
"6925281924446",
"6925281924408",
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}
},
"product_reference": "CSAFPID-22001",
"relates_to_product_reference": "CSAFPID-11001"
}
]
},
"vulnerabilities": [
{
"acknowledgments": [
{
"names": [
"Justus W. Perlwitz"
],
"organization": "JWP Consulting GK",
"summary": "reporting",
"urls": [
"https://www.jwpconsulting.net/"
]
}
],
"cve": "CVE-2025-41725",
"cwe": {
"id": "CWE-923",
"name": "Improper Restriction of Communication Channel to Intended Endpoints"
},
"discovery_date": "2025-05-22T10:00:00.000Z",
"notes": [
{
"audience": "all",
"category": "description",
"text": "Affected devices running firmware versions prior to 4.1.0 may crash and become unavailable when receiving specific malformed Bluetooth messages from an unauthenticated attacker.",
"title": "CVE Description"
}
],
"product_status": {
"fixed": [
"CSAFPID-32001"
],
"known_affected": [
"CSAFPID-31001"
]
},
"release_date": "2026-02-13T11:00:00.000Z",
"remediations": [
{
"category": "vendor_fix",
"details": "Update JBL Flip 4 firmware to version 4.1.0 to remediate the issue.",
"product_ids": [
"CSAFPID-31001"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"environmentalScore": 6.5,
"environmentalSeverity": "MEDIUM",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"temporalScore": 6.5,
"temporalSeverity": "MEDIUM",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"products": [
"CSAFPID-31001"
]
}
],
"title": "DoS vulnerability in JBL Flip 4"
}
]
}