CVE-2021-25372
MediumExploitedPublic exploitAn improper boundary check in DSP driver prior to SMR Mar-2021 Release 1 allows out of bounds memory access.
Published Mar 26, 2021 · Updated Jan 14, 2026
Key Facts
Patch immediately- CVE-2021-25372 is a medium-severity vulnerability (CVSS 6.7 v3.1) affecting Android (Samsung), Samsung Mobile Devices.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Dec 22, 2020. Public exploit code is available.
- EPSS estimates a 0.8% probability of exploitation in the next 30 days.
- Fixed versions are available, including Samsung Mobile Devices SMR Mar-2021 Release 1.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
6.7
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
0.8%
Higher than 55.9% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2021-25372 brief as a PDF
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Description
An improper boundary check in DSP driver prior to SMR Mar-2021 Release 1 allows out of bounds memory access.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Jun 29, 2023 | Jul 20, 2023 | Not reported |
| Industry KEV feed | Dec 22, 2020 | Jul 20, 2023 | Not reported |
| CIRCL KEV | Jun 29, 2023 | Jul 20, 2023 | Not reported |
| ENISA EUVD | Jun 29, 2023 | n/a | Not reported |
Required action: Apply updates per vendor instructions or discontinue use of the product if updates are unavailable
Affected Products
5 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| AndroidSamsung | 10.0-smr-feb-2021-r1, 10.0-smr-jan-2021-r1, 11.0-smr-feb-2021-r1, 11.0-smr-jan-2021-r1 | n/a |
| Samsung Mobile Devices | >= Q(10.0), R(11.0) devices with exynos980, exynos2100, exynos9830 | SMR Mar-2021 Release 1 |
Patched Releases
Samsung Mobile Devices
SMR Mar-2021 Release 1
Timeline
Added to Industry KEV feed
Dec 22, 2020
Publicly disclosed
Mar 26, 2021
Added to CISA KEV
Jun 29, 2023
Added to CIRCL KEV
Jun 29, 2023
Added to ENISA EUVD
Jun 29, 2023
Last updated
Jan 14, 2026
Weakness Type
- CWE-703 Improper Check or Handling of Exceptional Conditions
- CWE-787 Out-of-bounds Write
References
FAQ
Common Questions.
An improper boundary check in DSP driver prior to SMR Mar-2021 Release 1 allows out of bounds memory access.
Affected: Android (Samsung) versions 10.0-smr-feb-2021-r1, 10.0-smr-jan-2021-r1, 11.0-smr-feb-2021-r1, 11.0-smr-jan-2021-r1; Samsung Mobile Devices versions >= Q(10.0), R(11.0) devices with exynos980, exynos2100, exynos9830. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Dec 22, 2020.
Yes. It was added on Jun 29, 2023 with a federal remediation due date of Jul 20, 2023.
Public exploit code is available.
Fixed versions are available, including Samsung Mobile Devices SMR Mar-2021 Release 1.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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