Samsung Mobile Devices Out-of-Bounds Read Vulnerability
Samsung mobile devices contain an out-of-bounds read vulnerability within the modem interface driver due to a lack of boundary checking of a buffer in set_skb_priv(), leading to remote code execution by dereference of an invalid function pointer.
- Vendor
- Samsung
- Product
- Mobile Devices
- CVSS
- 7.3
- EPSS (exploit probability)
- 0.6%
- Status
- kev
- CISA patch-by (BOD 22-01)
- Added to KEV
Is CVE-2021-25487 being exploited?
Yes. CISA added CVE-2021-25487 to its Known Exploited Vulnerabilities catalog on . CISA only lists a CVE when it has reliable evidence of exploitation in the wild.
FIRST's EPSS model puts the probability of exploitation activity in the next 30 days at 0.6% (scored October 14, 2026).
- CISA KEV[ LISTED ]
- ENISA EUVD (exploited)[ — ]
- CIRCL KEV[ — ]
Catalog snapshot 2026-10-21. Full cross-catalog view: /kev-comparison
What to do
CISA required actionApply updates per vendor instructions or discontinue use of the product if updates are unavailable
US federal civilian agencies must remediate by (21 days after listing) under BOD 22-01. Everyone else: that deadline is a sensible upper bound, not a target. Vendor guidance and the NVD record are linked under Source above.
Other Samsung Mobile Devices CVEs we track
| CVE / Vulnerability | Severity | CVSS | EPSS | Added to KEV |
|---|---|---|---|---|
| CVE-2025-21042 Samsung Mobile Devices Out-of-Bounds Write Vulnerability | [ HIGH ] | 8.8 | 34.5% | |
| CVE-2025-21043 Samsung Mobile Devices Out-of-Bounds Write Vulnerability | [ HIGH ] | 8.8 | 2.2% | |
| CVE-2022-22265 Samsung Mobile Devices Use-After-Free Vulnerability | [ MEDIUM ] | 5.0 | 0.4% | |
| CVE-2021-25489 Samsung Mobile Devices Improper Input Validation Vulnerability | [ LOW ] | 3.3 | 0.5% | |
| CVE-2021-25395 Samsung Mobile Devices Race Condition Vulnerability | [ MEDIUM ] | 6.4 | 0.4% | |
| CVE-2021-25394 Samsung Mobile Devices Race Condition Vulnerability | [ MEDIUM ] | 6.4 | 0.4% | |
| CVE-2021-25372 Samsung Mobile Devices Improper Boundary Check Vulnerability | [ MEDIUM ] | 6.1 | 0.8% | |
| CVE-2021-25371 Samsung Mobile Devices Unspecified Vulnerability | [ MEDIUM ] | 6.1 | 0.8% |