CVE-2021-25370: in the CISA KEV catalogue
Samsung Mobile Devices Memory Corruption Vulnerability. CISA added CVE-2021-25370 to the Known Exploited Vulnerabilities catalogue on 2022-11-08 with a default due date of 2022-11-29. Known ransomware campaign use: Unknown. Forensic triage flag: No.
Samsung mobile devices using Mali GPU contain an incorrect implementation handling file descriptor in dpu driver. This incorrect implementation results in memory corruption, leading to kernel panic. This vulnerability was chained with CVE-2021-25337 and CVE-2021-25369. (CISA description)
- Vendor / product
- Samsung Mobile Devices
- CWE
- CWE-416
- CISA required action
- Apply updates per vendor instructions.
- EPSS
- 0.89%, percentile 59 (scored 2026-11-03)
EPSS puts about 8.9 in 1,000 odds (0.89%) on exploitation activity being observed in the next 30 days. Its score is higher than or equal to that of 59% of scored CVEs. Most CVEs score under 1%, so a high percentile can sit on a small probability: read the percentage first.
Vendor and reference links (from CISA)
Your own deadline under CISA BOD 26-04 depends on exposure, automatability and technical impact: work it out with the BOD 26-04 calculator.
Frequently asked questions
Is CVE-2021-25370 in the CISA KEV catalogue?
Yes. CISA added CVE-2021-25370 (Samsung Mobile Devices Memory Corruption Vulnerability) to the Known Exploited Vulnerabilities catalogue on 2022-11-08. CISA's default due date for it is 2022-11-29.
Is CVE-2021-25370 used in ransomware attacks?
CISA marks known ransomware campaign use as Unknown for CVE-2021-25370. That means CISA lacks confirmation, not that ransomware groups do not use it.
What should I do about CVE-2021-25370?
CISA's required action: Apply updates per vendor instructions.
Sources
- CISA, Known Exploited Vulnerabilities Catalog (accessed 2026-11-03)
- FIRST, Exploit Prediction Scoring System (EPSS) (EPSS by FIRST; scores generated by Empirical Security)
- NVD record for CVE-2021-25370