CVE-2026-21112: Improper input validation in Samsung Tips prior to Android 17 allows local attackers to launch arbitrary activ

Q: How do I fix CVE-2026-21112?

android: upgrade to 17.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-21112 being exploited?

CVE-2026-21112 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-21112 affect?

CVE-2026-21112 affects android. Severity is medium (CVSS 5.5). Improper input validation in Samsung Tips prior to Android 17 allows local attackers to launch arbitrary activity with Samsung Tips privilege. User interaction is required for triggering this vulnerability.

Q: How urgent is CVE-2026-21112?

Priority 20/100. No elevated risk signals yet.

Routine

MEDIUM 5.5UPGRADE

CVE-2026-21112 is a medium-severity flaw (CVSS 5.5) 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 Tips prior to Android 17 allows local attackers to launch arbitrary activity with Samsung Tips privilege. 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	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.1% (top 97%)
CISA exploited list	No
Weakness	CWE-20
Published	2026-09-09
Last modified	2026-09-23

Publisher (CNA): Samsung Mobile · Vendor: samsung

Last updated 2026-09-23 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-09 05:17 UTCPublished CVE record published
2026-09-23 20:23 UTCUpdated Record last modified

samsung android UPGRADE

Affected: < 17.0

Fixed in: 17.0

Safe to downgrade to: no unaffected older release

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.

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-2026-21112?

android: upgrade to 17.0. Exact commands for each OS are on this page.

Is CVE-2026-21112 being exploited?

CVE-2026-21112 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-2026-21112 affect?

CVE-2026-21112 affects android. Severity is medium (CVSS 5.5). Improper input validation in Samsung Tips prior to Android 17 allows local attackers to launch arbitrary activity with Samsung Tips privilege. User interaction is required for triggering this vulnerability.

How urgent is CVE-2026-21112?

Priority 20/100. No elevated risk signals yet.

Software pages

Android vulnerabilities · Samsung vulnerabilities

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References

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