CVE-2026-21061: Improper input validation in Samsung Dialer prior to SMR Aug-2026 Release 1 allows remote attackers to access

Routine

MEDIUM 6.5MITIGATE

CVE-2026-21061 is a medium-severity flaw (CVSS 6.5) affecting android. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper input validation in Samsung Dialer prior to SMR Aug-2026 Release 1 allows remote attackers to access SIM related functions. User interaction is required for triggering this vulnerability.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.4% (top 66%)
CISA exploited list	No
Weakness	CWE-20
Published	2026-08-10
Last modified	2026-10-23

Publisher (CNA): Samsung Mobile · Vendor: samsung

Last updated 2026-10-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-10 08:16 UTCPublished CVE record published
2026-10-23 20:10 UTCUpdated Record last modified

samsung android MITIGATE

Affected: 14.0 · 14.0 smr-apr-2022-r1 · 14.0 smr-apr-2023-r1 · 14.0 smr-apr-2024-r1 · 14.0 smr-apr-2025-r1 · 14.0 smr-apr-2026-r1 · 14.0 smr-aug-2022-r1 · 14.0 smr-aug-2023-r1

Fixed in: no fixed release known

Safe to downgrade to: a release before 14.0

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Fedora 46 · clementine · FIXED · 1.4.2-1.fc46 · FEDORA-2026-3e748ef4d3 · source

sudo dnf upgrade --advisory=FEDORA-2026-3e748ef4d3

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-21061?

android: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-21061 being exploited?

CVE-2026-21061 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-21061 affect?

CVE-2026-21061 affects android. Severity is medium (CVSS 6.5). Improper input validation in Samsung Dialer prior to SMR Aug-2026 Release 1 allows remote attackers to access SIM related functions. User interaction is required for triggering this vulnerability.

How urgent is CVE-2026-21061?

Priority 31/100. No elevated risk signals yet.

Software pages

Android vulnerabilities · Samsung vulnerabilities

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References

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