CVE-2020-0257

Name: CVE-2020-0257
Creator: NVD / NIST
Published: 2020-08-11T20:15:12.837+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.18%

Last modified Jun 17, 2026

CVE-2020-0257 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In SpecializeCommon of com_android_internal_os_Zygote.cpp, there is a permissions bypass due to an incomplete cleanup. This could lead to local escalation of privilege in isolated processes with no additional execution privileges needed. EPSS estimates a 0.18% chance of exploitation in the next 30 days.

Description

In SpecializeCommon of com_android_internal_os_Zygote.cpp, there is a permissions bypass due to an incomplete cleanup. This could lead to local escalation of privilege in isolated processes with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10Android ID: A-156741968

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.18%

7.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Google	Android	10.0

References

https://source.android.com/security/bulletin/2020-08-01Vendor Advisory
https://source.android.com/security/bulletin/2020-08-01Vendor Advisory

Timeline

Published: Aug 11, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-0257?

How severe is CVE-2020-0257?

CVE-2020-0257 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.

How do I fix CVE-2020-0257?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-0257?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST