CVE-2025-43706

An issue was discovered in L2 in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, 990, 850, 1080, 2400, 1580, 9110, W920, W930, Modem 5123…

High · published January 5, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
25.0
In the wild
Unconfirmed
What it is

⚡ An incorrect handling of RRC packets in multiple Samsung processors could cause a Denial of Service — like a traffic jam caused by a misplaced road sign! 🚦 Imagine your favorite highway suddenly halting traffic due to a badly placed sign that confuses drivers. That's what happens here: the mismanagement of RRC packets prevents devices from communicating properly, just as confused drivers can't navigate their way home. If exploited, this vulnerability could cause devices powered by the affected Exynos processors to become inoperable, leaving users unable to make calls or access essential services. This can be absolutely devastating for anyone reliant on their mobile devices for daily communication, especially in emergency situations!

Put simply

Imagine your favorite highway suddenly halting traffic due to a badly placed sign that confuses drivers. That's what happens here: the mismanagement of RRC packets prevents devices from communicating properly, just as confused drivers can't navigate their way home. The vulnerability arises from how RRC packets are processed in Samsung's Mobile, Wearable, and Modem processors, leading to potential service interruption when malformed packets are received.

What to do

If exploited, this vulnerability could cause devices powered by the affected Exynos processors to become inoperable, leaving users unable to make calls or access essential services. This can be absolutely devastating for anyone reliant on their mobile devices for daily communication, especially in emergency situations! To mitigate this risk, users should ensure their devices receive any available firmware updates from Samsung as soon as they're released. Regularly checking for and applying security patches can help keep your device safe and operational! This is fixable! Keep your devices updated, and you'll be a security hero in no time. 🦸

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00331 · 25.0th percentile
Published
2026-01-05T00:00Z
EPSS history
Timeline
  • 05 JAN 00:00Z
    An issue was discovered in L2 in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 980, 990, 850, 1080, 2400, 1580, 9110, W920, W930, Modem 5123…
    cvelistv5