# CVE-2025-66367: Samsung Exynos baseband NAS DLTransport message handling crash

Source: https://junglewise.ai/threats/cve-2025-66367-improper-handling-of-nas-dltransport-messages-may-lead-to-a  
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-2025-66367 · Severity: info · Published 2026-11-05

Samsung's Exynos baseband processor handles wireless network signaling messages that may be improperly processed, leading to a crash. An attacker on the cellular network could send specially crafted messages to cause the baseband to crash, potentially disrupting cellular connectivity or enabling further attacks.

Technologies: [Samsung Exynos](https://junglewise.ai/threats/technologies/exynos). Vendors: [Samsung](https://junglewise.ai/threats/vendors/samsung).

## Quick answers

**Is CVE-2025-66367 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-66367 being exploited in the wild.

**How severe is CVE-2025-66367?** Informational severity, published 5 November 2026.

**Which products and versions are affected?** Samsung Exynos.

**Is there a fix for CVE-2025-66367?** 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-2025-66367 attacked?** It is attacked over the network, in device firmware.

**Am I affected by CVE-2025-66367?** Check whether you run Samsung Exynos. 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

Improper handling of NAS (Non-Access Stratum) DLTransport messages in Samsung Exynos baseband allows a baseband crash. The vulnerability can be triggered by an attacker with network access to the cellular network, with no authentication required. A successful attack results in denial of service via baseband crash.

## Affected products

- Samsung Exynos

## Timeline

- 2026-11-05: disclosed

## References

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

## Related threats

- [Samsung memory buffer permission handling privilege escalation](https://junglewise.ai/threats/cve-2026-48183-improper-permission-handling-during-buffer-operations-allows)
- [Samsung Exynos LTE RRC denial of service](https://junglewise.ai/threats/cve-2026-33971-in-the-lte-rrc-component-improper-handling-of-messages-before)
- [Samsung Exynos baseband denial of service in RRC Setup handling](https://junglewise.ai/threats/cve-2025-66366-incorrect-handling-of-unauthenticated-downlink-rrc-setup-messages)
- [Samsung Exynos baseband SIP packet handling crash](https://junglewise.ai/threats/cve-2025-66365-incorrect-handling-of-sip-packets-leads-to-baseband-crashes)