What is the CVSS score of CVE-2020-0022?

CVE-2020-0022 has a CVSS 3.1 base score of 8.8 (High). CVSS vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 5.4%.

Is there a public PoC exploit available for CVE-2020-0022?

Yes, a public proof-of-concept exploit is available for CVE-2020-0022. Prioritise patching immediately. EPSS: 5.4%.

Is there a patch available for CVE-2020-0022?

Yes, a patch is available for CVE-2020-0022. Update the affected software to the latest version immediately.

Android CVE-2020-0022

HIGH

Incorrect Calculation (CWE-682)

2020-02-13 security@android.com

RCE Buffer Overflow Google Android Huawei Mate 20 Firmware Nova 3 Firmware P20 Firmware Y9 2019 Firmware P30 Pro Firmware P30 Firmware Mate 20 X Firmware Mate 20 Pro Firmware P Smart Firmware P Smart 2019 Firmware P20 Pro Firmware Y6 2019 Firmware Y6 Pro 2019 Firmware Nova Lite 3 Firmware Honor 8A Firmware Honor 8X Firmware Honor View 20 Firmware Mate 30 Pro Firmware Mate 30 Firmware Mate 30 Pro 5G Firmware Mate 30 5G Firmware

8.8

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-682 ASVS 5.0 V15 - Secure Coding and Architecture Calculation correctness
Impact	CVSS score of 8.8 (HIGH). Attack characteristics: adjacent network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available.
Exploit ScenarioDerived	Successful exploitation could compromise the high-severity affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 5.4% exploitation probability (EPSS)

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AnalysisAI

In reassemble_and_dispatch of packet_fragmenter.cc, there is possible out of bounds write due to an incorrect bounds calculation. Rated high severity (CVSS 8.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Technical ContextAI · show details

This vulnerability is classified under CWE-682. In reassemble_and_dispatch of packet_fragmenter.cc, there is possible out of bounds write due to an incorrect bounds calculation. This could lead to remote code execution over Bluetooth with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-8.0 Android-8.1 Android-9 Android-10Android ID: A-143894715 Affected products include: Google Android, Huawei Mate 20 Firmware, Huawei Mate 20 Pro Firmware, Huawei Mate 20 X Firmware, Huawei P Smart Firmware.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 8.8 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionNVD

In reassemble_and_dispatch of packet_fragmenter.cc, there is possible out of bounds write due to an incorrect bounds calculation. This could lead to remote code execution over Bluetooth with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-8.0 Android-8.1 Android-9 Android-10Android ID: A-143894715

Threat Intelligence Overview

EPSS Score

5.4%

Top 8% exploitable

Exploit

POC

Public exploit code exists

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC Yes

EPSS 5.4%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

Poc

System Exposure· derived

Controlled

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +5

CVSS: +44

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)NVD

cpe:2.3:o:google:android:8.0:*:*:*:*:*:*:*

cpe:2.3:o:google:android:8.1:*:*:*:*:*:*:*

cpe:2.3:o:google:android:9.0:*:*:*:*:*:*:*

cpe:2.3:o:google:android:10.0:*:*:*:*:*:*:*

cpe:2.3:o:huawei:mate_20_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:huawei:mate_20_pro_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:huawei:mate_20_x_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:huawei:p_smart_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:huawei:p_smart_2019_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:huawei:p20_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:huawei:p20_pro_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:huawei:p30_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:huawei:p30_pro_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:huawei:y6_2019_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:huawei:y6_pro_2019_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:huawei:y9_2019_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:huawei:nova_3_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:huawei:nova_lite_3_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:huawei:honor_8a_firmware:*:*:*:*:*:*:*:*

cpe:2.3:o:huawei:honor_8x_firmware:*:*:*:*:*:*:*:*

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References

Advisories & patches

PATCH https://source.android.com/security/bulletin/2020-02-01 REF http://seclists.org/fulldisclosure/2020/Feb/10 REF http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200513-03-smartphone-en

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