--- title: "Patchability, Definition | MedTech Terms" description: "The designed-in ability to deploy security updates to a fielded medical device in a timely, controlled, and verifiable manner." lang: en json-ld: | { "@context": "https://schema.org", "@graph": [ { "@type": "DefinedTerm", "@id": "https://medtechterms.com/terms/patchability#term", "name": "Patchability", "description": "Patchability is the architectural and operational capacity to ship and apply security updates to a fielded medical device throughout its supported lifetime - including the update mechanism itself (signed packages, secure boot, rollback), the over-the-air or operator-driven delivery channel, and the regulatory pathway for the change. 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Larger changes may require a Special 510(k) or a new submission. FDA's 'Deciding When to Submit a 510(k) for a Software Change' guidance is the reference." } }, { "@type": "Question", "name": "Is over-the-air (OTA) update support required?", "acceptedAnswer": { "@type": "Answer", "text": "Not legally required, but FDA expects updates to be deliverable without 'unsupported manual steps' in clinical settings. For most connected devices, that means OTA or operator-driven push from a hospital management console." } }, { "@type": "Question", "name": "How long do we have to patch a critical vulnerability?", "acceptedAnswer": { "@type": "Answer", "text": "FDA expects 'timely' patching commensurate with risk. CISA recommends actively exploited vulnerabilities (KEV) be patched within days. Most MedTech CVD programs target 30 days for critical and 90 days for high." } } ] } ] } --- [ MedTech Terms The authoritative reference ](/) Browse Learn [Latest](/latest) About 1. [Home](/) 2. / 3. [Terms](/terms) 4. / 5. [Cybersecurity](/terms?cat=Cybersecurity) 6. / 7. Patchability [All terms](/terms) Cybersecurity [Connected & Cyber-Physical Devices](/ecosystems/connected-devices) # Patchability The designed-in ability to deploy security updates to a fielded medical device in a timely, controlled, and verifiable manner. Reviewed by [Christian Espinosa, Founder, Blue Goat Cyber](/authors/christian-espinosa) Last reviewed May 5, 2026 ## Definition Patchability is the architectural and operational capacity to ship and apply security updates to a fielded medical device throughout its supported lifetime - including the update mechanism itself (signed packages, [secure boot](/terms/secure-boot), rollback), the over-the-air or operator-driven delivery channel, and the regulatory pathway for the change. FDA's 2023 cybersecurity guidance treats patchability as a first-class security property, with a specific architecture view dedicated to updateability and patchability. What the regulation says FDA expects the premarket submission to include an Updateability/Patchability architecture view that shows how updates are authored, signed, distributed, validated on the device, and rolled back if needed. The submission must address how patches are delivered without unsupported manual steps in the clinical environment, how update failures are handled, and how end-of-support is communicated. Predetermined [Change Control](/terms/change-control) Plans (PCCPs) - particularly for AI/ML - interact with patchability for routine model updates. ## What this means in practice Devices designed without an update path become security debt the moment they ship. Mature MedTech teams design the update mechanism as part of the system architecture (cryptographic signing, A/B partitions, dual-bank firmware, [secure boot](/terms/secure-boot), audit logging) and validate it in [V&V](/terms/verification-validation) - not as a post-launch project. Hospitals increasingly refuse to procure devices without a credible patching story. Common pitfalls - • Designing the device first and bolting on an update mechanism later - the architecture won't support it. - • Shipping an update channel without cryptographic signing or rollback - a single compromised update can brick a fleet. - • Confusing 'patchable' with 'auto-updating' - clinical environments often need controlled, scheduled updates. ## Frequently asked questions Do all updates require a new 510(k)? No. Routine cybersecurity patches that don't change the device's [intended use](/terms/intended-use), technological characteristics, or risk profile typically fall under letter-to-file change controls. Larger changes may require a Special 510(k) or a new submission. FDA's 'Deciding When to Submit a 510(k) for a Software Change' guidance is the reference. Is over-the-air (OTA) update support required? How long do we have to patch a critical vulnerability? ## Cross-references ### See also Closely related context worth reading. - [ Legacy Device Cybersecurity ](/terms/legacy-device-cyber) ## Related terms Grouped by theme ### Editor's picks · Hand-selected related concepts [ Cybersecurity Over-the-Air Updates(OTA) Remote, network-delivered software or firmware updates to a fielded medical device. ](/terms/ota-updates)[ Cybersecurity Premarket Cybersecurity Submission The bundle of cybersecurity artifacts a sponsor includes in a 510(k), De Novo, PMA, or HDE submission for a cyber device. ](/terms/premarket-cybersecurity)[ Cybersecurity Section 524B of the FD&C Act(524B) The federal statute that gives FDA explicit premarket authority over cybersecurity for cyber devices. ](/terms/section-524b)[ Cybersecurity Secure Boot A chain-of-trust mechanism that ensures only cryptographically signed firmware and software can run on a device. ](/terms/secure-boot) ### More in Cybersecurity · Same category [ Cybersecurity AAMI SW96 AAMI/ANSI standard establishing requirements for medical-device cybersecurity activities throughout the lifecycle. ](/terms/aami-sw96)[ Cybersecurity AAMI TIR57 AAMI Technical Information Report providing MedTech-specific guidance on cybersecurity risk management. ](/terms/aami-tir57)[ Cybersecurity AAMI TIR97(TIR97) AAMI Technical Information Report on post-market security risk management for medical device manufacturers, the operational companion to TIR57. ](/terms/aami-tir97)[ Cybersecurity Brainjacking Unauthorized remote control of an implanted neurostimulator (e.g., DBS) to alter stimulation parameters and harm a patient. ](/terms/brainjacking) Cited by Where this term appears across MedTech Terms. Ecosystems (1) - [Connected & Cyber-Physical Devices](/ecosystems/connected-devices) ## Primary references 3 sources Link health: 3 verified · last checked 2026-06-20 FDA· 2 HSCC· 1 1. [1 FDA Cybersecurity Guidance (Sept 2023) Verified FDA · fda.gov ](https://www.fda.gov/regulatory-information/search-fda-guidance-documents/cybersecurity-medical-devices-quality-system-considerations-and-content-premarket-submissions) 2. [2 Deciding When to Submit a 510(k) for a Software Change to an Existing Device Verified FDA · fda.gov ](https://www.fda.gov/regulatory-information/search-fda-guidance-documents/deciding-when-submit-510k-software-change-existing-device) 3. [3 HSCC - Health Sector Coordinating Council Verified HSCC · healthsectorcouncil.org ](https://healthsectorcouncil.org/) Inline markers like \[1\] jump to the matching reference above. Sponsor note ### Working on medical device cybersecurity? Blue Goat Cyber specializes in MedTech cybersecurity - threat modeling, SBOMs, penetration testing, and FDA premarket submissions. [Book a 30-minute discovery session](https://go.bluegoatcyber.com/meetings/blue-goat-cyber/discovery-session) - No obligation - Expert-led from minute one - NDA available on request MedTech Terms is a community resource sponsored by [Blue Goat Cyber](https://bluegoatcyber.com). Definitions are independent of any vendor. On this term Category Cybersecurity Sources 3 Updated 5/5/2026 [Compare with another term](/compare?a=patchability) Learn in 60 seconds Card Lesson Quiz The designed-in ability to deploy security updates to a fielded medical device in a timely, controlled, and verifiable manner. - · Devices designed without an update path become security debt the moment they ship. - · Hospitals increasingly refuse to procure devices without a credible patching story. - · FDA's 2023 cybersecurity guidance treats patchability as a first-class security property, with a specific architecture view dedicated to updateability and patchability. Remember this Watch out: Designing the device first and bolting on an update mechanism later - the architecture won't support it. Related terms - [Over-the-Air Updates(OTA) ](/terms/ota-updates) - [Secure Boot ](/terms/secure-boot) - [Section 524B of the FD&C Act(524B) ](/terms/section-524b) - [Premarket Cybersecurity Submission ](/terms/premarket-cybersecurity) You may also need Auto-suggested from Cybersecurity and shared keywords. - [Cryptographic Agility ](/terms/crypto-agility) - [Code Signing ](/terms/code-signing) - [Hardware Root of Trust(HRoT) ](/terms/hardware-root-of-trust) - [HSCC Joint Security Plan(HSCC JSP) ](/terms/hscc-jsp) - [OWASP IoT and Embedded Application Security ](/terms/owasp-iot) - [Secure Product Development Framework(SPDF) ](/terms/spdf) [All Cybersecurity terms](/terms?cat=Cybersecurity) From the Blue Goat network Related resources and services on this topic. - [ MedTech Cybersecurity Standards Authoritative reference for the standards and guidances behind medical device cybersecurity. ](https://medtechcyberstandards.com) - [ MedTech Cyber Tips Practical, organized tips for medical device cybersecurity teams. ](https://medtechcybertips.com) - [ MedTech Cybersecurity Crosswalk International crosswalk of medical device cybersecurity requirements across regulators. ](https://mdccrosswalk.com) - [ Code Blue Real medical device cybersecurity incidents and their lessons. ](https://codebluechart.com) MedTech Terms An authoritative, plain-language reference for the regulatory, quality, cybersecurity, and software terms that shape modern medical devices. 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