How severe is CVE-2020-35715?

CVE-2020-35715 has a CVSS 3.x base score of 8.8, 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 high.

Is CVE-2020-35715 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-35715?

CVE-2020-35715 affects Linksys Re6500 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-35715?

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-2020-35715 published?

CVE-2020-35715 was published on 2020-12-26 and last updated on 2026-06-17.

CVE-2020-35715

CVE-2020-35715 is a high-severity vulnerability in Linksys Re6500 Firmware with a CVSS 3.x base score of 8.8. 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-78.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Linksys Re6500 Firmware
Published: 2020-12-26
Last modified: 2026-06-17

Description

Belkin LINKSYS RE6500 devices before 1.0.012.001 allow remote authenticated users to execute arbitrary commands via shell metacharacters in a filename to the upload_settings.cgi page.

Frequently asked questions

What is CVE-2020-35715?: Belkin LINKSYS RE6500 devices before 1.0.012.001 allow remote authenticated users to execute arbitrary commands via shell metacharacters in a filename to the upload_settings.cgi page.
How severe is CVE-2020-35715?: CVE-2020-35715 has a CVSS 3.x base score of 8.8, 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 high.
Is CVE-2020-35715 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-35715?: CVE-2020-35715 affects Linksys Re6500 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-35715?: 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-2020-35715 published?: CVE-2020-35715 was published on 2020-12-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:linksys:re6500_firmware:*:*:*:*:*:*:*:*

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