CVE-2021-25407
HIGH
7.8
CVSS Score
Published: June 11, 2021 at 02:33 PM UTC
Updated: June 17, 2026 at 03:42 AM UTC
2 products affected across 2 vendorsAndroidSamsung Mobile Devices· also runs on 4 platforms
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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
Description
A possible out of bounds write vulnerability in NPU driver prior to SMR JUN-2021 Release 1 allows arbitrary memory write.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
samsung-exynos-2100 (environment) · samsung-exynos-980-firmware (environment) · samsung-exynos-9820 (environment) · samsung-exynos-9830 (environment)
P(9.0), Q(10.0), R(11.0) devices with Exynos9820, 9830, 980, 2100 chipsets ≤ v < SMR JUN-2021 Release 1P(9.0), Q(10.0), R(11.0) devices with Exynos9820, 9830, 980, 2100 chipsets
Affected range stops below SMR JUN-2021 Release 1, so it looks safe — our inference, not a vendor statement
Runs on — not affected
The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_MISCThird Party AdvisoryVDB Entry
Source: [email protected]
http://packetstormsecurity.com/files/163198/Samsung-NPU-npu_session_format-Out-Of-Bounds-Write.htmlx_refsource_MISCVendor Advisory
Source: [email protected]
https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=6CVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-787
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