CVE-2023-31115: Samsung Exynos 5123 Firmware

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

An issue was discovered in the Shannon RCS component in Samsung Exynos Modem 5123 and 5300. Incorrect resource transfer between spheres can cause changes to the activation mode of RCS via a crafted application.

Affected products

• Samsung Exynos 5123 Firmware: affected versions not specified
• Samsung Exynos 5300 Firmware: affected versions not specified

Published 2023-06-07. Last modified 2026-06-17.