How severe is CVE-2020-0306?

CVE-2020-0306 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-0306 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-0306?

CVE-2020-0306 affects Google Android. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-0306?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-0306 published?

CVE-2020-0306 was published on 2020-09-17 and last updated on 2026-06-17.

CVE-2020-0306

CVE-2020-0306 is a high-severity vulnerability in Google Android with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Google Android
Published: 2020-09-17
Last modified: 2026-06-17

Description

In LLVM, there is a possible ineffective stack cookie placement due to stack frame double reservation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-139666480

Frequently asked questions

What is CVE-2020-0306?: In LLVM, there is a possible ineffective stack cookie placement due to stack frame double reservation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-139666480
How severe is CVE-2020-0306?: CVE-2020-0306 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-0306 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-0306?: CVE-2020-0306 affects Google Android. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-0306?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-0306 published?: CVE-2020-0306 was published on 2020-09-17 and last updated on 2026-06-17.

References

https://source.android.com/security/bulletin/android-11

Affected products (1)

cpe:2.3:o:google:android:11.0:*:*:*:*:*:*:*

More vulnerabilities in Google Android

CVE-2026-0092 — Critical (CVSS 10.0): In Package Manager, there is a possible device lock controller bypass due to a missing permission check. This could…
CVE-2025-48611 — Critical (CVSS 10.0): In DeviceId of DeviceId.java, there is a possible desync in persistence due to a missing bounds check. This could lead…
CVE-2015-8073 — Critical (CVSS 10.0): mediaserver in Android 4.4 and 5.1 before 5.1.1 LMY48X allows remote attackers to execute arbitrary code or cause a…
CVE-2015-8072 — Critical (CVSS 10.0): mediaserver in Android 4.4 through 5.x before 5.1.1 LMY48X and 6.0 before 2015-11-01 allows remote attackers to execute…
CVE-2015-6610 — Critical (CVSS 10.0): libstagefright in Android before 5.1.1 LMY48X and 6.0 before 2015-11-01 allows attackers to gain privileges or cause a…
CVE-2015-6609 — Critical (CVSS 10.0): libutils in Android before 5.1.1 LMY48X and 6.0 before 2015-11-01 allows remote attackers to execute arbitrary code or…

All CVEs affecting Google Android →