CVE-2023-21479: Improper authorization in Smart suggestions prior to SMR Apr-2023 Release 1 in Android 13 and 4.1.01.0 in Andr

Routine

MEDIUM 5.3REMOTEMITIGATEDOWNGRADE

CVE-2023-21479 is a medium-severity flaw (CVSS 5.3) affecting android, smart suggestions. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper authorization in Smart suggestions prior to SMR Apr-2023 Release 1 in Android 13 and 4.1.01.0 in Android 12 allows remote attackers to register a schedule.

Why this priority

Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	5.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 69%)
CISA exploited list	No
Published	2025-09-03
Last modified	2026-06-17

Publisher (CNA): Samsung Mobile · Vendor: samsung

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-09-03 06:15 UTCPublished CVE record published
2026-06-17 05:32 UTCUpdated Record last modified

samsung android MITIGATE

Affected: 13.0 smr-apr-2022-r1 · 13.0 smr-aug-2022-r1 · 13.0 smr-dec-2021-r1 · 13.0 smr-dec-2022-r1 · 13.0 smr-feb-2022-r1 · 13.0 smr-feb-2023-r1 · 13.0 smr-jan-2022-r1 · 13.0 smr-jan-2023-r1

Fixed in: no fixed release known

Safe to downgrade to: a release before 13.0

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.

samsung smart suggestions DOWNGRADE

Affected: 4.1.01.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 4.1.01.0

1. Check installed version

apt-cache policy smart-suggestions || rpm -q smart-suggestions || smart-suggestions --version

2. No fixed release: DOWNGRADE to a release before 4.1.01.0 (Debian / Ubuntu)

apt-cache madison smart-suggestions sudo apt install smart-suggestions=<VERSION_BEFORE_4.1.01.0> sudo apt-mark hold smart-suggestions

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list smart-suggestions sudo dnf downgrade smart-suggestions-<VERSION_BEFORE_4.1.01.0> sudo dnf versionlock add smart-suggestions

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

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-2023-21479?

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

Is CVE-2023-21479 being exploited?

CVE-2023-21479 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-2023-21479 affect?

CVE-2023-21479 affects android, smart suggestions. Severity is medium (CVSS 5.3). Improper authorization in Smart suggestions prior to SMR Apr-2023 Release 1 in Android 13 and 4.1.01.0 in Android 12 allows remote attackers to register a schedule.

How urgent is CVE-2023-21479?

Priority 31/100. Remotely exploitable, no login, no user action

Software pages

Android vulnerabilities · Samsung vulnerabilities

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References

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