CVE-2023-21517
CVE-2023-21517 is a high-severity vulnerability in Samsung Exynos with a CVSS 3.x base score of 8.8. 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-787.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- EPSS exploit prediction: 2% (73rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Samsung Exynos
- Published:
- Last modified:
Description
Heap out-of-bound write vulnerability in Exynos baseband prior to SMR Jun-2023 Release 1 allows remote attacker to execute arbitrary code.
Frequently asked questions
- What is CVE-2023-21517?
- Heap out-of-bound write vulnerability in Exynos baseband prior to SMR Jun-2023 Release 1 allows remote attacker to execute arbitrary code.
- How severe is CVE-2023-21517?
- CVE-2023-21517 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2023-21517 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2023-21517?
- CVE-2023-21517 affects Samsung Exynos. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2023-21517?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2023-21517 published?
- CVE-2023-21517 was published on 2023-06-28 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:h:samsung:exynos:-:*:*:*:*:*:*:*
More vulnerabilities in Samsung Exynos
- CVE-2020-10835 — Critical (CVSS 9.8): An issue was discovered on Samsung mobile devices with any (before February 2020 for Exynos modem chipsets) software.…
- CVE-2020-25054 — Critical (CVSS 9.1): An issue was discovered on Samsung mobile devices with software through 2020-04-02 (Exynos modem chipsets). There is a…
- CVE-2023-21467 — Medium (CVSS 4.6): Error in 3GPP specification implementation in Exynos baseband prior to SMR Apr-2023 Release 1 allows incorrect handling…
All CVEs affecting Samsung Exynos →
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