CVE-2023-21455
CVE-2023-21455 is a medium-severity vulnerability in Samsung Exynos Firmware with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.
Key facts
- Severity: Medium (CVSS 3.x base score 5.9)
- EPSS exploit prediction: 0% (32nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-287
- Affected product: Samsung Exynos Firmware
- Published:
- Last modified:
Description
Improper authorization implementation in Exynos baseband prior to SMR Mar-2023 Release 1 allows incorrect handling of unencrypted message.
Frequently asked questions
- What is CVE-2023-21455?
- Improper authorization implementation in Exynos baseband prior to SMR Mar-2023 Release 1 allows incorrect handling of unencrypted message.
- How severe is CVE-2023-21455?
- CVE-2023-21455 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over an adjacent network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability none.
- Is CVE-2023-21455 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-21455?
- CVE-2023-21455 affects Samsung Exynos Firmware. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-21455?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2023-21455 published?
- CVE-2023-21455 was published on 2023-03-16 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:samsung:exynos_firmware:-:*:*:*:*:*:*:*
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