How severe is CVE-2021-25355?

CVE-2021-25355 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-25355 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-25355?

CVE-2021-25355 affects Samsung Notes. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-25355?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-25355 published?

CVE-2021-25355 was published on 2021-03-25 and last updated on 2026-06-17.

CVE-2021-25355

CVE-2021-25355 is a medium-severity vulnerability in Samsung Notes with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-276.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.6
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-276
Affected product: Samsung Notes
Published: 2021-03-25
Last modified: 2026-06-17

Description

Using unsafe PendingIntent in Samsung Notes prior to version 4.2.00.22 allows local attackers unauthorized action without permission via hijacking the PendingIntent.

Frequently asked questions

What is CVE-2021-25355?: Using unsafe PendingIntent in Samsung Notes prior to version 4.2.00.22 allows local attackers unauthorized action without permission via hijacking the PendingIntent.
How severe is CVE-2021-25355?: CVE-2021-25355 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-25355 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-25355?: CVE-2021-25355 affects Samsung Notes. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-25355?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-25355 published?: CVE-2021-25355 was published on 2021-03-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:samsung:notes:*:*:*:*:*:*:*:*

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