How severe is CVE-2021-20119?

CVE-2021-20119 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-20119 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-20119?

CVE-2021-20119 affects Commscope Arris Surfboard Sb8200 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-20119?

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-2021-20119 published?

CVE-2021-20119 was published on 2021-11-09 and last updated on 2026-06-17.

CVE-2021-20119

CVE-2021-20119 is a high-severity vulnerability in Commscope Arris Surfboard Sb8200 Firmware with a CVSS 3.x base score of 7.1. 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-863.

Key facts

Severity: High (CVSS 3.x base score 7.1)
CVSS v2: 4.9
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Commscope Arris Surfboard Sb8200 Firmware
Published: 2021-11-09
Last modified: 2026-06-17

Description

The password change utility for the Arris SurfBoard SB8200 can have safety measures bypassed that allow any logged-in user to change the administrator password.

Frequently asked questions

What is CVE-2021-20119?: The password change utility for the Arris SurfBoard SB8200 can have safety measures bypassed that allow any logged-in user to change the administrator password.
How severe is CVE-2021-20119?: CVE-2021-20119 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over an adjacent network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-20119 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20119?: CVE-2021-20119 affects Commscope Arris Surfboard Sb8200 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-20119?: 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-2021-20119 published?: CVE-2021-20119 was published on 2021-11-09 and last updated on 2026-06-17.

References

https://www.tenable.com/security/research/tra-2021-49

Affected products (1)

cpe:2.3:o:commscope:arris_surfboard_sb8200_firmware:ab01.02.053.01_112320_193.0a.nsh:*:*:*:*:*:*:*

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