How severe is CVE-2021-46416?

CVE-2021-46416 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2021-46416 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-46416?

CVE-2021-46416 affects Sma Sunny Tripower Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-46416?

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-2021-46416 published?

CVE-2021-46416 was published on 2022-04-07 and last updated on 2026-07-13.

CVE-2021-46416

CVE-2021-46416 is a high-severity vulnerability in Sma Sunny Tripower Firmware with a CVSS 3.x base score of 8.1. 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-639.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 5.5
EPSS exploit prediction: 4% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-639
Affected product: Sma Sunny Tripower Firmware
Published: 2022-04-07
Last modified: 2026-07-13

Description

Insecure direct object reference in SUNNY TRIPOWER 5.0 Firmware version 3.10.16.R leads to unauthorized user groups accessing due to insecure cookie handling.

Frequently asked questions

What is CVE-2021-46416?: Insecure direct object reference in SUNNY TRIPOWER 5.0 Firmware version 3.10.16.R leads to unauthorized user groups accessing due to insecure cookie handling.
How severe is CVE-2021-46416?: CVE-2021-46416 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2021-46416 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-46416?: CVE-2021-46416 affects Sma Sunny Tripower Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-46416?: 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-2021-46416 published?: CVE-2021-46416 was published on 2022-04-07 and last updated on 2026-07-13.

References

Affected products (1)

cpe:2.3:o:sma:sunny_tripower_firmware:3.10.16.r:*:*:*:*:*:*:*

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