ICSA-25-343-01
Vulnerability from csaf_cisa - Published: 2025-12-09 07:00 - Updated: 2026-03-05 07:00Summary
Universal Boot Loader (U-Boot) (Update A)
Notes
Legal Notice and Terms of Use
This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).
Risk evaluation
Successful exploitation of this vulnerability could result in arbitrary code execution.
Critical infrastructure sectors
Chemical, Commercial Facilities, Communications, Critical Manufacturing, Dams, Defense Industrial Base, Emergency Services, Energy, Financial Services, Food and Agriculture, Government Services and Facilities, Healthcare and Public Health, Information Technology, Water and Wastewater, Transportation Systems, Water and Wastewater
Countries/areas deployed
Worldwide
Company headquarters location
United States
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:
Recommended Practices
Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the Internet.
Recommended Practices
Locate control system networks and remote devices behind firewalls and isolating them from business networks.
Recommended Practices
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.
Recommended Practices
CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
Recommended Practices
CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
Recommended Practices
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.
Recommended Practices
Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.
Recommended Practices
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.
Recommended Practices
No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely.
{
"document": {
"acknowledgments": [
{
"names": [
"Harvey Phillips"
],
"organization": "Amazon Element55",
"summary": "reported this vulnerability to CISA"
}
],
"category": "csaf_security_advisory",
"csaf_version": "2.0",
"distribution": {
"text": "Disclosure is not limited",
"tlp": {
"label": "WHITE",
"url": "https://www.cisa.gov/news-events/news/traffic-light-protocol-tlp-definitions-and-usage"
}
},
"lang": "en-US",
"notes": [
{
"category": "legal_disclaimer",
"text": "This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy \u0026 Use policy (https://www.cisa.gov/privacy-policy).",
"title": "Legal Notice and Terms of Use"
},
{
"category": "summary",
"text": "Successful exploitation of this vulnerability could result in arbitrary code execution.",
"title": "Risk evaluation"
},
{
"category": "other",
"text": "Chemical, Commercial Facilities, Communications, Critical Manufacturing, Dams, Defense Industrial Base, Emergency Services, Energy, Financial Services, Food and Agriculture, Government Services and Facilities, Healthcare and Public Health, Information Technology, Water and Wastewater, Transportation Systems, Water and Wastewater",
"title": "Critical infrastructure sectors"
},
{
"category": "other",
"text": "Worldwide",
"title": "Countries/areas deployed"
},
{
"category": "other",
"text": "United States",
"title": "Company headquarters location"
},
{
"category": "general",
"text": "CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the Internet.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "Locate control system networks and remote devices behind firewalls and isolating them from business networks.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.",
"title": "Recommended Practices"
},
{
"category": "general",
"text": "No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely.",
"title": "Recommended Practices"
}
],
"publisher": {
"category": "coordinator",
"contact_details": "central@cisa.dhs.gov",
"name": "CISA",
"namespace": "https://www.cisa.gov/"
},
"references": [
{
"category": "self",
"summary": "ICS Advisory ICSA-25-343-01 JSON",
"url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2025/icsa-25-343-01.json"
},
{
"category": "self",
"summary": "ICSA Advisory ICSA-25-343-01 - Web Version",
"url": "https://www.cisa.gov/news-events/ics-advisories/icsa-25-343-01"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/resources-tools/resources/ics-recommended-practices"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/topics/industrial-control-systems"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/news-events/ics-alerts/ics-alert-10-301-01"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/news-events/news/targeted-cyber-intrusion-detection-and-mitigation-strategies-update-b"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/secure-our-world/teach-employees-avoid-phishing"
},
{
"category": "external",
"summary": "Recommended Practices",
"url": "https://www.cisa.gov/news-events/news/avoiding-social-engineering-and-phishing-attacks"
}
],
"title": "Universal Boot Loader (U-Boot) (Update A)",
"tracking": {
"current_release_date": "2026-03-05T07:00:00.000000Z",
"generator": {
"date": "2026-03-04T21:15:53.264261Z",
"engine": {
"name": "CISA CSAF Generator",
"version": "1.0.0"
}
},
"id": "ICSA-25-343-01",
"initial_release_date": "2025-12-09T07:00:00.000000Z",
"revision_history": [
{
"date": "2025-12-09T07:00:00.000000Z",
"legacy_version": "Initial",
"number": "1",
"summary": "Initial Publication"
},
{
"date": "2026-03-05T07:00:00.000000Z",
"legacy_version": "Update A",
"number": "2",
"summary": "Update A - Added Johnson Controls Airwall AW-75 to the affected products and mitigations"
}
],
"status": "final",
"version": "2"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "\u003c2017.11",
"product": {
"name": "U-Boot U-boot: \u003c2017.11",
"product_id": "CSAFPID-0001"
}
}
],
"category": "product_name",
"name": "U-boot"
}
],
"category": "vendor",
"name": "U-Boot"
},
{
"branches": [
{
"branches": [
{
"category": "product_version",
"name": "IPQ4019",
"product": {
"name": "Qualcomm Chipset IPQ4019",
"product_id": "CSAFPID-0002"
}
},
{
"category": "product_version",
"name": "IPQ5018",
"product": {
"name": "Qualcomm Chipset IPQ5018",
"product_id": "CSAFPID-0003"
}
},
{
"category": "product_version",
"name": "IPQ5322",
"product": {
"name": "Qualcomm Chipset IPQ5322",
"product_id": "CSAFPID-0004"
}
},
{
"category": "product_version",
"name": "IPQ6018",
"product": {
"name": "Qualcomm Chipset IPQ6018",
"product_id": "CSAFPID-0005"
}
},
{
"category": "product_version",
"name": "IPQ8064",
"product": {
"name": "Qualcomm Chipset IPQ8064",
"product_id": "CSAFPID-0006"
}
},
{
"category": "product_version",
"name": "IPQ8074",
"product": {
"name": "Qualcomm Chipset IPQ8074",
"product_id": "CSAFPID-0007"
}
},
{
"category": "product_version",
"name": "IPQ9574",
"product": {
"name": "Qualcomm Chipset IPQ9574",
"product_id": "CSAFPID-0008"
}
}
],
"category": "product_name",
"name": "Chipset"
}
],
"category": "vendor",
"name": "Qualcomm"
},
{
"branches": [
{
"branches": [
{
"category": "product_version_range",
"name": "vers:all/*",
"product": {
"name": "Johnson Controls Airwall AW-75 vers:all/*",
"product_id": "CSAFPID-0009"
}
}
],
"category": "product_name",
"name": "Airwall AW-75"
}
],
"category": "vendor",
"name": "Johnson Controls"
}
],
"relationships": [
{
"category": "installed_on",
"full_product_name": {
"name": "U-Boot U-boot: \u003c2017.11 installed on Qualcomm Chipset IPQ4019",
"product_id": "CSAFPID-0010"
},
"product_reference": "CSAFPID-0001",
"relates_to_product_reference": "CSAFPID-0002"
},
{
"category": "installed_on",
"full_product_name": {
"name": "U-Boot U-boot: \u003c2017.11 installed on Qualcomm Chipset IPQ5018",
"product_id": "CSAFPID-0011"
},
"product_reference": "CSAFPID-0001",
"relates_to_product_reference": "CSAFPID-0003"
},
{
"category": "installed_on",
"full_product_name": {
"name": "U-Boot U-boot: \u003c2017.11 installed on Qualcomm Chipset IPQ5322",
"product_id": "CSAFPID-0012"
},
"product_reference": "CSAFPID-0001",
"relates_to_product_reference": "CSAFPID-0004"
},
{
"category": "installed_on",
"full_product_name": {
"name": "U-Boot U-boot: \u003c2017.11 installed on Qualcomm Chipset IPQ6018",
"product_id": "CSAFPID-0013"
},
"product_reference": "CSAFPID-0001",
"relates_to_product_reference": "CSAFPID-0005"
},
{
"category": "installed_on",
"full_product_name": {
"name": "U-Boot U-boot: \u003c2017.11 installed on Qualcomm Chipset IPQ8064",
"product_id": "CSAFPID-0014"
},
"product_reference": "CSAFPID-0001",
"relates_to_product_reference": "CSAFPID-0006"
},
{
"category": "installed_on",
"full_product_name": {
"name": "U-Boot U-boot: \u003c2017.11 installed on Qualcomm Chipset IPQ8074",
"product_id": "CSAFPID-0015"
},
"product_reference": "CSAFPID-0001",
"relates_to_product_reference": "CSAFPID-0007"
},
{
"category": "installed_on",
"full_product_name": {
"name": "U-Boot U-boot: \u003c2017.11 installed on Qualcomm Chipset IPQ9574",
"product_id": "CSAFPID-0016"
},
"product_reference": "CSAFPID-0001",
"relates_to_product_reference": "CSAFPID-0008"
},
{
"category": "installed_on",
"full_product_name": {
"name": "U-Boot U-boot: \u003c2017.11 installed on Johnson Controls Airwall AW-75 vers:all/*",
"product_id": "CSAFPID-0017"
},
"product_reference": "CSAFPID-0001",
"relates_to_product_reference": "CSAFPID-0009"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2025-24857",
"cwe": {
"id": "CWE-1274",
"name": "Improper Access Control for Volatile Memory Containing Boot Code"
},
"notes": [
{
"category": "summary",
"text": "The affected products are vulnerable to a bootloader vulnerability, which could allow an attacker to execute arbitrary code.",
"title": "Vulnerability Summary"
}
],
"product_status": {
"known_affected": [
"CSAFPID-0001",
"CSAFPID-0010",
"CSAFPID-0011",
"CSAFPID-0012",
"CSAFPID-0013",
"CSAFPID-0014",
"CSAFPID-0015",
"CSAFPID-0016",
"CSAFPID-0017"
]
},
"references": [
{
"category": "external",
"summary": "cwe.mitre.org",
"url": "https://cwe.mitre.org/data/definitions/1274.html"
},
{
"category": "external",
"summary": "www.cve.org",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-24857"
},
{
"category": "external",
"summary": "www.first.org",
"url": "https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
},
{
"category": "external",
"summary": "www.first.org",
"url": "https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
}
],
"remediations": [
{
"category": "vendor_fix",
"details": "Konsulko, the third-party maintainer of U-boot, recommends users upgrade to version v2025.4 or later and ensure the physical security of the device.",
"product_ids": [
"CSAFPID-0001",
"CSAFPID-0017"
],
"url": "https://ftp.denx.de/pub/u-boot/"
},
{
"category": "mitigation",
"details": "Qualcomm recommends users with the affected chips to contact support referencing CVE-2025-24857, QPSIIR-1969 or CR4082905.",
"product_ids": [
"CSAFPID-0010",
"CSAFPID-0011",
"CSAFPID-0012",
"CSAFPID-0013",
"CSAFPID-0014",
"CSAFPID-0015",
"CSAFPID-0016"
],
"url": "https://www.qualcomm.com/support/contact"
},
{
"category": "mitigation",
"details": "Johnson Controls recommend users to consider the following defensive measure: (1) Deploy Airwall in a physically secure location so an attacker can\u0027t plug in USB devices. (2) Restrict physical access to USB A ports (not the micro-USB console port which is not affected) by sealing them with epoxy or a similar material. (3) For Airwall 75 gateways running U-Boot version 2017.03 and before (version number is displayed on the console port as the Airwall gateway boots), install hotfix hf-3303 to update U-Boot. Hotfix can be downloaded from https://webhelp.tempered.io/content/topics/downloads_hotfixes.html#downloads_hotfixes__section_vw4_25x_13c",
"product_ids": [
"CSAFPID-0017"
],
"url": "https://webhelp.tempered.io/content/topics/downloads_hotfixes.html#downloads_hotfixes__section_vw4_25x_13c"
},
{
"category": "mitigation",
"details": "For more detailed mitigation instructions, please see Johnson Controls Product Security Advisory JCI-PSA-2026-04 at the following location: https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories",
"product_ids": [
"CSAFPID-0017"
],
"url": "https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories"
}
],
"scores": [
{
"cvss_v3": {
"baseScore": 8.4,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"CSAFPID-0001",
"CSAFPID-0010",
"CSAFPID-0011",
"CSAFPID-0012",
"CSAFPID-0013",
"CSAFPID-0014",
"CSAFPID-0015",
"CSAFPID-0016",
"CSAFPID-0017"
]
}
]
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
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.
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