How severe is CVE-2019-20557?

CVE-2019-20557 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 none, integrity high, and availability none.

Is CVE-2019-20557 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-20557?

CVE-2019-20557 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-2019-20557?

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

When was CVE-2019-20557 published?

CVE-2019-20557 was published on 2020-03-24 and last updated on 2026-06-17.

CVE-2019-20557

CVE-2019-20557 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.

Key facts

Severity: Medium (CVSS 3.x base score 4.6)
CVSS v2: 2.1
EPSS exploit prediction: 0% (3rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Google Android
Published: 2020-03-24
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. Attackers can bypass Factory Reset Protection (FRP) via a SIM card by blocking the PUK code. The Samsung ID is SVE-2019-15262 (October 2019).

Frequently asked questions

What is CVE-2019-20557?: An issue was discovered on Samsung mobile devices with N(7.x), O(8.x), and P(9.0) software. Attackers can bypass Factory Reset Protection (FRP) via a SIM card by blocking the PUK code. The Samsung ID is SVE-2019-15262 (October 2019).
How severe is CVE-2019-20557?: CVE-2019-20557 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 none, integrity high, and availability none.
Is CVE-2019-20557 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-20557?: CVE-2019-20557 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-2019-20557?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-20557 published?: CVE-2019-20557 was published on 2020-03-24 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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