How severe is CVE-2020-21627?

CVE-2020-21627 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-21627 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-21627?

CVE-2020-21627 affects Ruijie Rg-uac Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-21627?

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-2020-21627 published?

CVE-2020-21627 was published on 2021-11-16 and last updated on 2026-06-17.

CVE-2020-21627

CVE-2020-21627 is a high-severity vulnerability in Ruijie Rg-uac Firmware with a CVSS 3.x base score of 7.5. 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 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ruijie Rg-uac Firmware
Published: 2021-11-16
Last modified: 2026-06-17

Description

Ruijie RG-UAC commit 9071227 was discovered to contain a vulnerability in the component /current_action.php?action=reboot, which allows attackers to cause a denial of service (DoS) via unspecified vectors.

Frequently asked questions

What is CVE-2020-21627?: Ruijie RG-UAC commit 9071227 was discovered to contain a vulnerability in the component /current_action.php?action=reboot, which allows attackers to cause a denial of service (DoS) via unspecified vectors.
How severe is CVE-2020-21627?: CVE-2020-21627 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-21627 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-21627?: CVE-2020-21627 affects Ruijie Rg-uac Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-21627?: 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-2020-21627 published?: CVE-2020-21627 was published on 2021-11-16 and last updated on 2026-06-17.

References

https://github.com/Sm1L3ing/ACSEC/blob/master/Ruijie-RG-UAC

Affected products (1)

cpe:2.3:o:ruijie:rg-uac_firmware:-:*:*:*:*:*:*:*

More vulnerabilities in Ruijie Rg-uac Firmware

CVE-2024-6187 — Medium (CVSS 6.3): A vulnerability has been found in Ruijie RG-UAC 1.0 and classified as critical. This vulnerability affects unknown code…
CVE-2024-6186 — Medium (CVSS 6.3): A vulnerability, which was classified as critical, was found in Ruijie RG-UAC 1.0. This affects an unknown part of the…
CVE-2024-6185 — Medium (CVSS 6.3): A vulnerability, which was classified as critical, has been found in Ruijie RG-UAC 1.0. Affected by this issue is the…
CVE-2024-6184 — Medium (CVSS 6.3): A vulnerability classified as critical was found in Ruijie RG-UAC 1.0. Affected by this vulnerability is an unknown…
CVE-2024-6269 — Medium (CVSS 4.7): A vulnerability has been found in Ruijie RG-UAC 1.0 and classified as critical. This vulnerability affects the function…

All CVEs affecting Ruijie Rg-uac Firmware →