CVE-2023-26076
CWE-120Published: March 13, 2023· Updated: Jun 17, 2026
Official Description
An issue was discovered in Samsung Mobile Chipset and Baseband Modem Chipset for Exynos 1280, Exynos 2200, Exynos Modem 5123, Exynos Modem 5300, and Exynos Auto T5123. An intra-object overflow in the 5G SM message codec can occur due to insufficient parameter validation when decoding reserved options.
Risk Analysis
Samsung mobile and modem chipsets are vulnerable to an intra-object overflow in the 5G SM message codec caused by insufficient parameter validation. This critical flaw could allow an attacker to achieve code execution or system disruption.
No public exploit is currently known, and the vulnerability is not in the CISA KEV. It is considered remotely exploitable.
Apply the latest firmware updates provided by Samsung for the affected Exynos chipsets. Ensure devices are kept up to date with security patches.
Technical Analysis
CVE-2023-26076 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (10)
Quick Facts
Related CVEs (CWE-120)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2023-26076 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts