medium Known exploitedREV. 01

CVE-2021-25395Samsung — the same race, past the signature check

A race in the Samsung charger driver lets a local attacker get past the signature check, provided radio privileges on the device are already compromised. The May 2021 security release closes it.

YOUR NEXT MOVE

Install the May 2021 Samsung security update or later. It ships with the companion race in the same driver, so one update covers both of them.

Read the risk

THE VITAL STATS
CVSS score
6.4/ 10
CVSS v3.1
EPSS probability
0%
Likelihood of exploitation
Attack complexity
High
Conditions needed to exploit
Known exploited
Yes — CISA KEV
CVE published
2021-06-11
Added to KEV
2023-06-29
Exploit published
Not recorded
Confidence
high
Kill chain
defense evasion
MITRE ATT&CK
T1068
Severity
medium

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Attacker needsRadio privileges on the device must already be compromised.

Behind the card

3 REFERENCES
Field-level provenanceTRACE THE SOURCES +

Which source supports each field, when it was retrieved, and who extracted it.

FieldsSourceRetrievedExtractorConfidence
cvss, exploitation.attack_complexity, exploitation.exploit_available, references, published_atnvd.nist.gov2026-09-24scrty-crds-pipeline/0.1high
exploitation.known_exploited, exploitation.kev_addedcisa.gov2026-09-24scrty-crds-pipeline/0.1high
epssapi.first.org2026-09-24scrty-crds-pipeline/0.1high
title, summary, severity, remediation, mitre_attack, kill_chain, recommended_action, confidence, tags, exploitation.prerequisitesnvd.nist.gov2026-09-24claude-codehigh

Printing history

THE RECORD
  1. r1Initial base card

First printing. This card has not been reprinted since publication.

crds:cve-2021-25395 · CRDS 0.1 · Issued 2026-09-24