How severe is CVE-2018-21053?

CVE-2018-21053 has a CVSS 3.x base score of 4.6, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2018-21053 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-21053?

CVE-2018-21053 primarily affects Google Android. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-21053?

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

When was CVE-2018-21053 published?

CVE-2018-21053 was published on 2020-04-08 and last updated on 2026-06-17.

CVE-2018-21053

CVE-2018-21053 is a medium-severity vulnerability in Google Android with a CVSS 3.x base score of 4.6. 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-200.

Key facts

Severity: Medium (CVSS 3.x base score 4.6)
CVSS v2: 2.1
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Google Android
Published: 2020-04-08
Last modified: 2026-06-17

Description

An issue was discovered on Samsung mobile devices with N(7.x), O(8.x), and P(9.0) software. There is Clipboard access in the lockscreen state via a physical keyboard. The Samsung ID is SVE-2018-12684 (October 2018).

Frequently asked questions

What is CVE-2018-21053?: An issue was discovered on Samsung mobile devices with N(7.x), O(8.x), and P(9.0) software. There is Clipboard access in the lockscreen state via a physical keyboard. The Samsung ID is SVE-2018-12684 (October 2018).
How severe is CVE-2018-21053?: CVE-2018-21053 has a CVSS 3.x base score of 4.6, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2018-21053 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-21053?: CVE-2018-21053 primarily affects Google Android. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-21053?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-21053 published?: CVE-2018-21053 was published on 2020-04-08 and last updated on 2026-06-17.

References

https://security.samsungmobile.com/securityUpdate.smsb

Affected products (7)

cpe:2.3:o:google:android:7.0:*:*:*:*:*:*:*
cpe:2.3:o:google:android:7.1.0:*:*:*:*:*:*:*
cpe:2.3:o:google:android:7.1.1:*:*:*:*:*:*:*
cpe:2.3:o:google:android:7.1.2:*:*:*:*:*:*:*
cpe:2.3:o:google:android:8.0:*:*:*:*:*:*:*
cpe:2.3:o:google:android:8.1:*:*:*:*:*:*:*
cpe:2.3:o:google:android:9.0:*:*:*:*:*:*:*

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