How severe is CVE-2020-1840?

CVE-2020-1840 has a CVSS 3.x base score of 6.0, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2020-1840 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-1840?

CVE-2020-1840 affects Huawei Mate 20 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-1840?

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

When was CVE-2020-1840 published?

CVE-2020-1840 was published on 2020-01-21 and last updated on 2026-06-17.

CVE-2020-1840

CVE-2020-1840 is a medium-severity vulnerability in Huawei Mate 20 Firmware with a CVSS 3.x base score of 6.0. 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 6.0)
CVSS v2: 3.6
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Huawei Mate 20 Firmware
Published: 2020-01-21
Last modified: 2026-06-17

Description

HUAWEI Mate 20 smart phones with versions earlier than 10.0.0.175(C00E70R3P8) have an insufficient authentication vulnerability. A local attacker with high privilege can execute a specific command to exploit this vulnerability. Successful exploitation may cause information leak and compromise the availability of the smart phones.Affected product versions include: HUAWEI Mate 20 versions Versions earlier than 10.0.0.175(C00E70R3P8)

Frequently asked questions

What is CVE-2020-1840?: HUAWEI Mate 20 smart phones with versions earlier than 10.0.0.175(C00E70R3P8) have an insufficient authentication vulnerability. A local attacker with high privilege can execute a specific command to exploit this vulnerability. Successful exploitation may cause information leak and compromise the availability of the smart phones.Affected product versions include: HUAWEI Mate 20 versions Versions earlier than 10.0.0.175(C00E70R3P8)
How severe is CVE-2020-1840?: CVE-2020-1840 has a CVSS 3.x base score of 6.0, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2020-1840 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-1840?: CVE-2020-1840 affects Huawei Mate 20 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-1840?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-1840 published?: CVE-2020-1840 was published on 2020-01-21 and last updated on 2026-06-17.

References

https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200115-01-smartphone-en

Affected products (1)

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

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Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

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