How severe is CVE-2020-35716?

CVE-2020-35716 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-2020-35716 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-35716?

CVE-2020-35716 affects Linksys Re6500 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-35716?

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-2020-35716 published?

CVE-2020-35716 was published on 2020-12-26 and last updated on 2026-06-17.

CVE-2020-35716

CVE-2020-35716 is a high-severity vulnerability in Linksys Re6500 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: 7.8
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
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 attackers to cause a persistent denial of service (segmentation fault) via a long /goform/langSwitch langSelectionOnly parameter.

Frequently asked questions

What is CVE-2020-35716?: Belkin LINKSYS RE6500 devices before 1.0.012.001 allow remote attackers to cause a persistent denial of service (segmentation fault) via a long /goform/langSwitch langSelectionOnly parameter.
How severe is CVE-2020-35716?: CVE-2020-35716 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-2020-35716 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-35716?: CVE-2020-35716 affects Linksys Re6500 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-35716?: 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-2020-35716 published?: CVE-2020-35716 was published on 2020-12-26 and last updated on 2026-06-17.

References

Affected products (1)

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