# CVE-2026-48174: Samsung 5G modem denial-of-service in NR RRC authentication

Source: https://junglewise.ai/threats/cve-2026-48174-in-the-nr-rrc-component-improper-handling-of-messages-before  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-05. Updated: 2026-11-05  
License: CC BY 4.0 with a link back

CVE-2026-48174 · Severity: info · Published 2026-11-05

Samsung's 5G modem chipsets contain a vulnerability in the NR RRC (Radio Resource Control) component that improperly handles messages before authentication is complete. An attacker can send specially crafted messages to trigger a denial-of-service condition, temporarily disrupting 5G connectivity on affected devices.

Vendors: [Samsung](https://junglewise.ai/threats/vendors/samsung).

## Quick answers

**Is CVE-2026-48174 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-48174 being exploited in the wild.

**How severe is CVE-2026-48174?** Informational severity, published 5 November 2026.

**Which products and versions are affected?** Samsung 5G Modem.

**Is there a fix for CVE-2026-48174?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-48174 attacked?** It is attacked from the adjacent network, in device firmware.

**Am I affected by CVE-2026-48174?** Check whether you run Samsung 5G Modem. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The NR RRC component fails to properly validate and handle Radio Resource Control messages received prior to authentication completion, leading to a data abort. This results in a denial-of-service condition affecting 5G radio connectivity. The vulnerability is triggered by network-adjacent unauthenticated messages and requires no user interaction to exploit.

## Affected products

- Samsung 5G Modem

## References

- [https://semiconductor.samsung.com/support/quality-support/product-security-updates/](https://semiconductor.samsung.com/support/quality-support/product-security-updates/)