CVE-2025-66365: Samsung Exynos baseband SIP packet handling crash

CVE-2025-66365 · Severity: info · Published 2026-11-05

Samsung's Exynos baseband processor, which handles cellular communications in mobile devices, can crash when processing malformed SIP (Session Initiation Protocol) packets. A crash in the baseband could disrupt cellular connectivity or potentially be leveraged as a denial-of-service attack vector. However, detailed attack feasibility and impact information is limited in the available advisory.

Technologies: Samsung Exynos. Vendors: Samsung.

Quick answers

Is CVE-2025-66365 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-66365 being exploited in the wild.
How severe is CVE-2025-66365?
Informational severity, published 5 November 2026.
Which products and versions are affected?
Samsung Exynos.
Is there a fix for CVE-2025-66365?
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-2025-66365 attacked?
It is attacked over the network, in device firmware.
Am I affected by CVE-2025-66365?
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

Incorrect handling of SIP packets in the Exynos baseband leads to crashes, likely via memory corruption or unhandled exceptions. The vulnerability affects the baseband's telephony processing logic and may be triggered remotely through crafted SIP signaling packets, though exploitation details and prerequisite conditions are not fully documented in the advisory.

Affected products

  • Samsung Exynos

Timeline

  • 2026-11-05: disclosed

References

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