Sennheiser Wireless Headphones: Security Update Support Dates
Security-update support dates for nine Sennheiser models. MOMENTUM 4 Wireless is earliest, on 24 July 2027; this is not a hardware shutdown date.
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://eu.sennheiser-hearing.com/en-nl/pages/hdb-630-faq · https://support.sennheiser-hearing.com/hc/en-gb/articles/36444900304157-MOMENTUM-5-Wireless-Before-You-Start
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
Product Issues & Limitations · 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.
Continue the research
Move from this article to a verified product decision
Use descriptive links to move between product records, brand evidence, comparisons, setup or issue guidance, and compatible-system tools. Inclusion reflects subject relevance, not a score or endorsement; product facts, recommendation eligibility, and commercial links remain separate.
Product page
Verify the exact model
Brand center
Check the wider platform
Related comparison
Compare the system role
Setup, firmware & problems
Check behavior before buying
System Builder & compatibility
