Specification
3GPP TS 33.401: 3GPP System Architecture Evolution (SAE); Security architecture
At a glance
- Title
- 3GPP System Architecture Evolution (SAE); Security architecture
- Newest version
- V19.2.0 (Rel-19)
- Versions indexed
- 5
- Newest per release
- Rel-15: V15.12.0 (2024-09-27); Rel-16: V16.4.0 (2024-09-27); Rel-17: V17.7.0 (2025-03-25); Rel-18: V18.3.0 (2025-03-25); Rel-19: V19.2.0 (2026-01-16)
In plain words
TS 33.401 specifies security features, mechanisms and procedures for the Evolved Packet System (EPS), including the Evolved Packet Core and Evolved UTRAN. Its overview says security features provide users secure access to services and particularly protect against "attacks on the (radio) access link." It also covers secure signalling exchange and user data between AN and SN, and within AN, plus protection against attacks on the wireline network.
Source: 3GPP TS 33.401 V19.2.0, clause 4. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/33_series/33.401/33401-j20.zip
Newest version in each release
| Release | Newest version | In the archive | TSG meeting |
|---|---|---|---|
| Rel-19 | V19.2.0 | 2026-01-16 | TSG SA #110 |
| Rel-18 | V18.3.0 | 2025-03-25 | TSG SA #107 |
| Rel-17 | V17.7.0 | 2025-03-25 | TSG SA #107 |
| Rel-16 | V16.4.0 | 2024-09-27 | TSG SA #105 |
| Rel-15 | V15.12.0 | 2024-09-27 | TSG SA #105 |
Source: 3GPP specification archive, versions indexed by 3GPP Scout. Each version links its official file.
Meetings behind the latest versions
Plenary meetings:
- TSG SA #110 approved V19.2.0 (Rel-19)
- TSG SA #107 approved V18.3.0 (Rel-18)
- TSG SA #107 approved V17.7.0 (Rel-17)
Source: 3GPP CR database and specification archive, as indexed by 3GPP Scout.
Sources
- 3GPP TS 33.401 V19.2.0, clause 1. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/33_series/33.401/33401-j20.zip
- 3GPP TS 33.401 V19.2.0, clause 4. © 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TSDSI, TTA, TTC). Official text: https://www.3gpp.org/ftp/Specs/archive/33_series/33.401/33401-j20.zip
How this page was made
The facts box and the tables come straight from the 3GPP specification archive and CR database as indexed by 3GPP Scout. An AI model (GPT-6 Luna) wrote the paragraph and named the source of each sentence. Code checked every quote word for word against the stored source text and every number against the cited source. A second AI model from another company (Claude Opus 5.5) reviewed the paragraph against the same sources. The 3GPP documents themselves govern.