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# Sennheiser Wireless Headphones: Security Update Support Dates
- URL: https://www.soundpathlab.com/sennheiser-wireless-headphone-security-update-support-dates/
- Published: 2026-10-01T07:08:41.000Z
- Updated: 2026-10-01T14:33:56.000Z
- Description: Security-update support dates for nine Sennheiser models. MOMENTUM 4 Wireless is earliest, on 24 July 2027; this is not a hardware shutdown date.
- Author: SoundPath Lab
- Tags: Lifecycle & Support

**Checked 1 October 2026.** Sennheiser's published security-support schedule lists nine wireless models. All nine remain marked Active.

| Model                    | Security updates end |
| ------------------------ | -------------------- |
| ACCENTUM Open            | 19 March 2030        |
| ACCENTUM Plus Wireless   | 30 January 2029      |
| ACCENTUM True Wireless   | 30 April 2029        |
| ACCENTUM Wireless        | 29 September 2028    |
| HDB 630                  | 13 October 2030      |
| MOMENTUM 4 Wireless      | 24 July 2027         |
| MOMENTUM 5               | 30 August 2031       |
| MOMENTUM Sport           | 30 December 2028     |
| MOMENTUM True Wireless 4 | 6 January 2029       |

The earliest date is for MOMENTUM 4 Wireless. These dates concern security updates; they are not announced hardware shutdown dates. Repairs, parts, non-security firmware and app support require separate evidence.

App compatibility — separate from security support

Sennheiser’s Smart Control Plus FAQ explicitly lists six of these nine models: ACCENTUM Plus Wireless, ACCENTUM True Wireless, ACCENTUM Wireless, MOMENTUM 4 Wireless, MOMENTUM Sport and MOMENTUM True Wireless 4\. Separate official support/product pages confirm Smart Control Plus for HDB 630 and MOMENTUM 5\. ACCENTUM Open was not individually listed in the checked Smart Control Plus FAQ; that absence is not proof of incompatibility. No dated app-support end has been published for any of the nine. Status: Pending verification.

Official app sources: [https://uk.sennheiser-hearing.com/pages/smart-control-plus-app](https://uk.sennheiser-hearing.com/pages/smart-control-plus-app?ref=soundpathlab.com) · [https://eu.sennheiser-hearing.com/en-nl/pages/hdb-630-faq](https://eu.sennheiser-hearing.com/en-nl/pages/hdb-630-faq?ref=soundpathlab.com) · [https://support.sennheiser-hearing.com/hc/en-gb/articles/36444900304157-MOMENTUM-5-Wireless-Before-You-Start](https://support.sennheiser-hearing.com/hc/en-gb/articles/36444900304157-MOMENTUM-5-Wireless-Before-You-Start?ref=soundpathlab.com)

Revision — 1 October 2026: added the model-specific Smart Control Plus boundary without treating app compatibility as part of the security-update deadline or inferring that an unlisted model is unsupported.

For a used purchase, compare the remaining support window alongside condition, price and the functions you need. For an existing pair, keep a dated record of firmware and check the manufacturer's policy again before the relevant deadline.

**Evidence:** manufacturer policy, updated 21 September 2026; no SoundPath Lab post-support test. Record: SPL-SEN-SEC-001\. This is a support-policy record, not a discovered vulnerability.

[Official Sennheiser support policy and current table](https://support.sennheiser-hearing.com/hc/en-us/articles/36575041180573-Product-Support-Period-Policy-and-Update?ref=soundpathlab.com)

[Product Issues & Limitations](https://www.soundpathlab.com/product-issues-limitations/) · [Lifecycle & Support](https://www.soundpathlab.com/tag/lifecycle-support/)

Revision — 1 October 2026: prepared this support-date record after checking the official table again. Security-support dates checked against the manufacturer’s current table.