CVE-2021-25436
CVE-2021-25436 is a critical-severity vulnerability in Linux Tizen with a CVSS 3.x base score of 9.8. 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-20.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- CVSS v2: 7.5
- EPSS exploit prediction: 2% (74th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-20
- Affected product: Linux Tizen
- Published:
- Last modified:
Description
Improper input validation vulnerability in Tizen FOTA service prior to Firmware update JUL-2021 Release allows arbitrary code execution via Samsung Accessory Protocol.
Frequently asked questions
- What is CVE-2021-25436?
- Improper input validation vulnerability in Tizen FOTA service prior to Firmware update JUL-2021 Release allows arbitrary code execution via Samsung Accessory Protocol.
- How severe is CVE-2021-25436?
- CVE-2021-25436 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-25436 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-25436?
- CVE-2021-25436 affects Linux Tizen. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-25436?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2021-25436 published?
- CVE-2021-25436 was published on 2021-07-08 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:o:linux:tizen:*:*:*:*:*:*:*:*
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