How severe is CVE-2021-41946?

CVE-2021-41946 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-41946 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-41946?

CVE-2021-41946 affects Fiberhome Hg150-ub Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-41946?

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

When was CVE-2021-41946 published?

CVE-2021-41946 was published on 2022-05-18 and last updated on 2026-06-17.

CVE-2021-41946

CVE-2021-41946 is a medium-severity vulnerability in Fiberhome Hg150-ub Firmware with a CVSS 3.x base score of 5.4. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Fiberhome Hg150-ub Firmware
Published: 2022-05-18
Last modified: 2026-06-17

Description

In FiberHome VDSL2 Modem HG150-Ub_V3.0, a stored cross-site scripting (XSS) vulnerability in Parental Control --> Access Time Restriction --> Username field, a user cannot delete the rule due to the XSS.

Frequently asked questions

What is CVE-2021-41946?: In FiberHome VDSL2 Modem HG150-Ub_V3.0, a stored cross-site scripting (XSS) vulnerability in Parental Control --> Access Time Restriction --> Username field, a user cannot delete the rule due to the XSS.
How severe is CVE-2021-41946?: CVE-2021-41946 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-41946 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-41946?: CVE-2021-41946 affects Fiberhome Hg150-ub Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-41946?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-41946 published?: CVE-2021-41946 was published on 2022-05-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:fiberhome:hg150-ub_firmware:3.0:*:*:*:*:*:*:*

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CVE-2022-36200 — High (CVSS 7.5): In FiberHome VDSL2 Modem HG150-Ub_V3.0, Credentials of Admin are submitted in URL, which can be logged/sniffed.

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