CVE-2025-21035: Improper access control in Samsung Calendar prior to version 12.5.06.5 in Android 14 and 12.6.01.12 in Android

Q: How do I fix CVE-2025-21035?

calendar: upgrade to 12.5.06.5, 12.6.01.12. Exact commands for each OS are on this page.

Q: Is CVE-2025-21035 being exploited?

CVE-2025-21035 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-2025-21035 affect?

CVE-2025-21035 affects calendar. Severity is medium (CVSS 4.6). Improper access control in Samsung Calendar prior to version 12.5.06.5 in Android 14 and 12.6.01.12 in Android 15 allows physical attackers to access data across multiple user profiles.

Q: How urgent is CVE-2025-21035?

Priority 19/100. No elevated risk signals yet.

Routine

MEDIUM 4.6UPGRADE

CVE-2025-21035 is a medium-severity flaw (CVSS 4.6) affecting calendar. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Improper access control in Samsung Calendar prior to version 12.5.06.5 in Android 14 and 12.6.01.12 in Android 15 allows physical attackers to access data across multiple user profiles.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.6 (Medium)
Attack vector	Physical
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.2% (top 87%)
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 08:42 UTCUpdated Record last modified

samsung calendar UPGRADE

Affected: < 12.5.06.5 · < 12.6.01.12

Fixed in: 12.5.06.5, 12.6.01.12

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy calendar || rpm -q calendar || calendar --version

2. UPGRADE to 12.5.06.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade calendar

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade calendar

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2025-21035?

calendar: upgrade to 12.5.06.5, 12.6.01.12. Exact commands for each OS are on this page.

Is CVE-2025-21035 being exploited?

CVE-2025-21035 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-2025-21035 affect?

CVE-2025-21035 affects calendar. Severity is medium (CVSS 4.6). Improper access control in Samsung Calendar prior to version 12.5.06.5 in Android 14 and 12.6.01.12 in Android 15 allows physical attackers to access data across multiple user profiles.

How urgent is CVE-2025-21035?

Priority 19/100. No elevated risk signals yet.

Software pages

Android vulnerabilities · Samsung vulnerabilities

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References

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