CVEvulnerability
CVE-2025-48219
3.5 LOW
Official page ↗
- Status
- Deferred
- Published
- 2025-05-18
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 3.5 LOW — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N
- Weaknesses
- CWE-201
Description
O2 UK before 2025-05-19 allows subscribers to determine the Cell ID of other subscribers by initiating an IMS (IP Multimedia Subsystem) call and then reading the utran-cell-id-3gpp field of a Cellular-Network-Info SIP header, aka an ECI (E-UTRAN Cell Identity) leak. The Cell ID might be usable to identify a cell location via crowdsourced data, and might correspond to a small physical area (e.g., if the called party is in a city centre). Removal of the Cellular-Network-Info header is mentioned in section 4.4.19 of ETSI TS 124 229.
Related
Weakness · CWE (1)
- CWE-201 Insertion of Sensitive Information Into Sent Data weakness
References
- https://mastdatabase.co.uk/blog/2025/05/o2-expose-customer-location-call-4g/ mastdatabase.co.uk
- https://news.ycombinator.com/item?id=44014046 news.ycombinator.com
- https://www.etsi.org/deliver/etsi_ts/124200_124299/124229/15.10.00_60/ts_124229v151000p.pdf www.etsi.org
- https://www.ispreview.co.uk/index.php/2025/05/o2-uk-fixes-volte-flaw-that-exposed-user-mobile-location-data.html www.ispreview.co.uk