How severe is CVE-2020-1789?

CVE-2020-1789 has a CVSS 3.x base score of 6.8, 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 high, and availability high.

Is CVE-2020-1789 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-1789?

CVE-2020-1789 primarily affects Huawei Osca-550 Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-1789?

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

When was CVE-2020-1789 published?

CVE-2020-1789 was published on 2020-02-18 and last updated on 2026-06-17.

CVE-2020-1789

CVE-2020-1789 is a medium-severity vulnerability in Huawei Osca-550 Firmware with a CVSS 3.x base score of 6.8. 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 6.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Huawei Osca-550 Firmware
Published: 2020-02-18
Last modified: 2026-06-17

Description

Huawei OSCA-550, OSCA-550A, OSCA-550AX, and OSCA-550X products with version 1.0.1.21(SP3) have an insufficient authentication vulnerability. The software does not require a strong credential when the user trying to do certain operations. Successful exploit could allow an attacker to pass the authentication and do certain operations by a weak credential.

Frequently asked questions

What is CVE-2020-1789?: Huawei OSCA-550, OSCA-550A, OSCA-550AX, and OSCA-550X products with version 1.0.1.21(SP3) have an insufficient authentication vulnerability. The software does not require a strong credential when the user trying to do certain operations. Successful exploit could allow an attacker to pass the authentication and do certain operations by a weak credential.
How severe is CVE-2020-1789?: CVE-2020-1789 has a CVSS 3.x base score of 6.8, 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 high, and availability high.
Is CVE-2020-1789 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-1789?: CVE-2020-1789 primarily affects Huawei Osca-550 Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-1789?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-1789 published?: CVE-2020-1789 was published on 2020-02-18 and last updated on 2026-06-17.

References

http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200121-01-osca-en

Affected products (4)

cpe:2.3:o:huawei:osca-550_firmware:1.0.1.21\(sp3\):*:*:*:*:*:*:*
cpe:2.3:o:huawei:osca-550a_firmware:1.0.1.21\(sp3\):*:*:*:*:*:*:*
cpe:2.3:o:huawei:osca-550ax_firmware:1.0.1.21\(sp3\):*:*:*:*:*:*:*
cpe:2.3:o:huawei:osca-550x_firmware:1.0.1.21\(sp3\):*:*:*:*:*:*:*

More vulnerabilities in Huawei Osca-550 Firmware

CVE-2020-1842 — Medium (CVSS 6.8): Huawei HEGE-560 version 1.0.1.20(SP2); OSCA-550 and OSCA-550A version 1.0.0.71(SP1); and OSCA-550AX and OSCA-550X…
CVE-2020-1843 — Medium (CVSS 6.8): Huawei HEGE-560 version 1.0.1.20(SP2), OSCA-550 version 1.0.0.71(SP1), OSCA-550A version 1.0.0.71(SP1), OSCA-550AX…
CVE-2020-1855 — Medium (CVSS 6.1): Huawei HEGE-570 version 1.0.1.22(SP3); and HEGE-560, OSCA-550, OSCA-550A, OSCA-550AX, and OSCA-550X version…
CVE-2020-1802 — Medium (CVSS 4.6): There is an insufficient integrity validation vulnerability in several products. The device does not sufficiently…
CVE-2020-1879 — Low (CVSS 3.9): There is an improper integrity checking vulnerability on some huawei products. The software of the affected product has…

All CVEs affecting Huawei Osca-550 Firmware →

Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
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…

Browse all CWE-287 (Improper Authentication) vulnerabilities →