How severe is CVE-2020-9109?

CVE-2020-9109 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-2020-9109 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-9109?

CVE-2020-9109 primarily affects Huawei Mate 20 Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-9109?

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

When was CVE-2020-9109 published?

CVE-2020-9109 was published on 2020-10-12 and last updated on 2026-06-17.

CVE-2020-9109

CVE-2020-9109 is a medium-severity vulnerability in Huawei Mate 20 Firmware 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-287.

Key facts

Severity: Medium (CVSS 3.x base score 4.6)
CVSS v2: 1.9
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Huawei Mate 20 Firmware
Published: 2020-10-12
Last modified: 2026-06-17

Description

There is an information disclosure vulnerability in several smartphones. The device does not sufficiently validate the identity of smart wearable device in certain specific scenario, the attacker need to gain certain information in the victim's smartphone to launch the attack, and successful exploit could cause information disclosure.Affected product versions include:HUAWEI Mate 20 versions earlier than 10.1.0.160(C00E160R3P8),versions earlier than 10.1.0.160(C01E160R2P8);HUAWEI Mate 20 X versions earlier than 10.1.0.160(C00E160R2P8),versions earlier than 10.1.0.160(C01E160R2P8);HUAWEI P30 Pro versions earlier than 10.1.0.160(C00E160R2P8);Laya-AL00EP versions earlier than 10.1.0.160(C786E160R3P8);Tony-AL00B versions earlier than 10.1.0.160(C00E160R2P11);Tony-TL00B versions earlier than 10.1.0.160(C01E160R2P11).

Frequently asked questions

What is CVE-2020-9109?: There is an information disclosure vulnerability in several smartphones. The device does not sufficiently validate the identity of smart wearable device in certain specific scenario, the attacker need to gain certain information in the victim's smartphone to launch the attack, and successful exploit could cause information disclosure.Affected product versions include:HUAWEI Mate 20 versions earlier than 10.1.0.160(C00E160R3P8),versions earlier than 10.1.0.160(C01E160R2P8);HUAWEI Mate 20 X versions earlier than 10.1.0.160(C00E160R2P8),versions earlier than 10.1.0.160(C01E160R2P8);HUAWEI P30 Pro versions earlier than 10.1.0.160(C00E160R2P8);Laya-AL00EP versions earlier than 10.1.0.160(C786E160R3P8);Tony-AL00B versions earlier than 10.1.0.160(C00E160R2P11);Tony-TL00B versions earlier than 10.1.0.160(C01E160R2P11).
How severe is CVE-2020-9109?: CVE-2020-9109 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-2020-9109 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-9109?: CVE-2020-9109 primarily affects Huawei Mate 20 Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-9109?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-9109 published?: CVE-2020-9109 was published on 2020-10-12 and last updated on 2026-06-17.

References

https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200930-01-dos-en

Affected products (6)

cpe:2.3:o:huawei:mate_20_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:huawei:mate_20_x_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:huawei:p30_pro_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:huawei:laya-al00ep_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:huawei:tony-al00b_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:huawei:tony-tl00b_firmware:*:*:*:*:*:*:*:*

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