Home/CVE/An issue was discovered in the Shannon RCS component in Samsung Exynos Modem 5123 and 5300. Incorrect resource transfer
CVE

CVE-2023-31115

An issue was discovered in the Shannon RCS component in Samsung Exynos Modem 5123 and 5300. Incorrect resource transfer

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.

HIGH · CVSS 7.5 EPSS 0.00278
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-669Incorrect Resource Transfer Between Spheres
CWE-669Incorrect Resource Transfer Between Spheres
▤

Affected Products & Versions

2
samsung exynos 5123 firmwareall versions
samsung exynos 5300 firmwareall versions
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD07 Jun 2023 · 09:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://semiconductor.samsung.com/support/quality-support/product-security-updates/Vendor Advisory
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