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Fencer Intel
medium 6.4

CVE-2021-25395 kev in the critical feed json

A race condition in MFC charger driver prior to SMR MAY-2021 Release 1 allows local attackers to bypass signature check given a radio privi…

published 5y ago modified 4mo ago also EUVD-2021-12291

cvss
6.4
version 3.1, CNA
cisa kev
Exploited
added 2023-06-29
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 30%
public exploits
0
none known

Summary

A race condition in MFC charger driver prior to SMR MAY-2021 Release 1 allows local attackers to bypass signature check given a radio privilege is compromised.

Patch / fix

cisa required action Apply updates per vendor instructions or discontinue use of the product if updates are unavailable

  • Samsung Mobile Samsung Mobile Devices SMR MAY-2021 Release 1

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Timeline

  1. Found exploited as a 0-day (Project Zero)
  2. 0-day patched (Project Zero)
  3. Published
  4. Added to CISA KEV
  5. CISA patch deadline
  6. CISA SSVC: exploitation active

Known exploited

Added
3y ago
Patch by
2023-07-20 (3y ago)
Ransomware
Not known
Required action
Apply updates per vendor instructions or discontinue use of the product if updates are unavailable
Vendor, product
Samsung, Mobile Devices
CISA name
Samsung Mobile Devices Race Condition Vulnerability

Zero-day

Detected in real attacks while still unknown to the vendor and the public, per Google Project Zero's 0day In-the-Wild tracker.

Found
2020-12-31
Patched
2021-05-01
Details
project zero tracker

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
no
Technical impact
total
Assessed
last yr.

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 6.4 CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.4 AV:L/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • Samsung Mobile Samsung Mobile Devices

Classification

Weakness
  • CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.