CVE-2021-25477
MEDIUM
4.9
CVSS Score
Published: October 6, 2021 at 05:09 PM UTC
Updated: June 17, 2026 at 03:42 AM UTC
2 products affected across 2 vendorsAndroidSamsung Mobile Devices· also runs on 3 platforms
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Severity
MEDIUM4.9
Exploit prediction
EPSS 0.5%
Description
An improper error handling in Mediatek RRC Protocol stack prior to SMR Oct-2021 Release 1 allows modem crash and remote denial of service.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
mediatek-mt6762 (environment) · mediatek-mt6765 (environment) · mediatek-mt6853 (environment)
P(9.0), Q(10.0), R(11.0) ≤ v < SMR Oct-2021 Release 1P(9.0), Q(10.0), R(11.0)
Affected range stops below SMR Oct-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 (1)
x_refsource_MISCVendor Advisory
Source: [email protected]
https://security.samsungmobile.com/securityUpdate.smsb?year=2021&month=10CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- HIGH
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-415
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