CVE-2021-25436: linux tizen Improper Input Validation
CVSS: 9.8v3.1CriticalModified
Published 08-07-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-25436 is a critical (CVSS 9.8) Improper Input Validation vulnerability in linux tizen. EPSS estimates a 1.64% chance of exploitation in the next 30 days, higher than 76% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
1.64%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 08-07-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
Improper input validation vulnerability in Tizen FOTA service prior to Firmware update JUL-2021 Release allows arbitrary code execution via Samsung Accessory Protocol.
CVSS metrics
2 scores · 1 source · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.64%
Chance of exploitation in the next 30 days
Percentile
76%
Versus all other CVEs
30-day change
0.00 pp
From 1.64% on 19-09-2026
19-09-202619-10-2026
EPSS score1.64%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Linux1 product
- tizen< 5.5
Samsung mobile1 product
- tizen wearable devices≥ Tizen 5.5, < Firmware update JUL-2021 Release
2 vendors · 2 products