How severe is CVE-2020-35233?

CVE-2020-35233 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-35233 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-35233?

CVE-2020-35233 primarily affects Netgear Gs116e Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-35233?

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

When was CVE-2020-35233 published?

CVE-2020-35233 was published on 2021-03-10 and last updated on 2026-06-17.

CVE-2020-35233

CVE-2020-35233 is a medium-severity vulnerability in Netgear Gs116e Firmware with a CVSS 3.x base score of 6.5. 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-400.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 6.1
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-400
Affected product: Netgear Gs116e Firmware
Published: 2021-03-10
Last modified: 2026-06-17

Description

The TFTP server fails to handle multiple connections on NETGEAR JGS516PE/GS116Ev2 v2.6.0.43 devices, and allows external attackers to force device reboots by sending concurrent connections, aka a denial of service attack.

Frequently asked questions

What is CVE-2020-35233?: The TFTP server fails to handle multiple connections on NETGEAR JGS516PE/GS116Ev2 v2.6.0.43 devices, and allows external attackers to force device reboots by sending concurrent connections, aka a denial of service attack.
How severe is CVE-2020-35233?: CVE-2020-35233 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-35233 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-35233?: CVE-2020-35233 primarily affects Netgear Gs116e Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-35233?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-35233 published?: CVE-2020-35233 was published on 2021-03-10 and last updated on 2026-06-17.

References

https://research.nccgroup.com/2021/03/08/technical-advisory-multiple-vulnerabilities-in-netgear-prosafe-plus-jgs516pe-gs116ev2-switches/

Affected products (2)

cpe:2.3:o:netgear:gs116e_firmware:2.6.0.43:*:*:*:*:*:*:*
cpe:2.3:o:netgear:jgs516pe_firmware:2.6.0.43:*:*:*:*:*:*:*

More vulnerabilities in Netgear Gs116e Firmware

CVE-2020-35231 — High (CVSS 8.8): The NSDP protocol implementation on NETGEAR JGS516PE/GS116Ev2 v2.6.0.43 devices was affected by an authentication issue…
CVE-2020-35229 — High (CVSS 8.8): The authentication token required to execute NSDP write requests on NETGEAR JGS516PE/GS116Ev2 v2.6.0.43 devices is not…
CVE-2020-35223 — High (CVSS 8.8): The CSRF protection mechanism implemented in the web administration panel on NETGEAR JGS516PE/GS116Ev2 v2.6.0.43…
CVE-2020-35221 — High (CVSS 8.8): The hashing algorithm implemented for NSDP password authentication on NETGEAR JGS516PE/GS116Ev2 v2.6.0.43 devices was…
CVE-2020-35801 — High (CVSS 8.3): Certain NETGEAR devices are affected by incorrect configuration of security settings. This affects JGS516PE before…
CVE-2020-35782 — High (CVSS 8.1): Certain NETGEAR devices are affected by lack of access control at the function level. This affects JGS516PE before…

All CVEs affecting Netgear Gs116e Firmware →

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