CVE-2023-21455
Improper authorization implementation in Exynos baseband prior to SMR Mar-2023 Release 1 allows...
Improper authorization implementation in Exynos baseband prior to SMR Mar-2023 Release 1 allows incorrect handling of unencrypted message.
Attack profile
How easy it is to exploit
- Attack vector
- Adjacent network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Improper authorization implementation in Exynos baseband prior to SMR Mar-2023 Release 1 allows incorrect handling of unencrypted message.
- Record
CVE-2023-21455- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N - Weakness
- CWE-287
- Updated
- 2026-11-02
EUVDEUVD-2023-25623
Improper authorization implementation in Exynos baseband prior to SMR Mar-2023 Release 1 allows incorrect handling of unencrypted message.
- Record
EUVD-2023-25623- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-wxhm-9fww-9xcx
Improper authorization implementation in Exynos baseband prior to SMR Mar-2023 Release 1 allows...
Improper authorization implementation in Exynos baseband prior to SMR Mar-2023 Release 1 allows incorrect handling of unencrypted message.
- Record
GHSA-wxhm-9fww-9xcx- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Updated
- 2026-11-02
NVD
Improper authorization implementation in Exynos baseband prior to SMR Mar-2023 Release 1 allows incorrect handling of unencrypted message.
- Record
CVE-2023-21455- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N - CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-287
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-21455 is a medium vulnerability (CVSS 5.9) in Samsung Exynos Firmware, published March 16, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.40%, the 35th percentile. No source names a fixed version.