CVE-2026-33970 Null dereference in Exynos 850 firmware
A NULL pointer dereference in Samsung Exynos 5G baseband firmware allows attackers to cause a denial of service via malformed RRC messages.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-33970?
CVE-2026-33970 is a low-severity vulnerability in Samsung Exynos 850 firmware, published on 14 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue was discovered in NR RRC and L2 in Samsung Mobile Processor, Wearable Processor, and Modem Exynos 850, 1080, 2100, 1280, 2200, 1330, 1380, 1480, 2400, 1580, 2500, 1680, W920, W930, W1000, and Modem 5410. In the 5G baseband, a NULL Pointer Dereference occurs when processing a malformed RRC Reconfiguration message.
Weakness: CWE-476
Which versions are affected by CVE-2026-33970?
How do I fix CVE-2026-33970?
No fix has been published for CVE-2026-33970 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-33970 being exploited?
There is no known exploitation of CVE-2026-33970 in the wild and no public exploit code.
Sources
Also known as GHSA-f639-4hcc-p36p.