How severe is CVE-2019-20699?

CVE-2019-20699 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-20699 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-20699?

CVE-2019-20699 primarily affects Netgear Gs105e Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-20699?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2019-20699 published?

CVE-2019-20699 was published on 2020-04-16 and last updated on 2026-06-17.

CVE-2019-20699

CVE-2019-20699 is a critical-severity vulnerability in Netgear Gs105e Firmware with a CVSS 3.x base score of 9.8. 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-120.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Netgear Gs105e Firmware
Published: 2020-04-16
Last modified: 2026-06-17

Description

Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects GS105Ev2 before 1.6.0.4, GS105PE before 1.6.0.4, GS408EPP before 1.0.0.15, GS808E before 1.7.0.7, GS908E before 1.7.0.3, GSS108E before 1.6.0.4, and GSS108EPP before 1.0.0.15.

Frequently asked questions

What is CVE-2019-20699?: Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects GS105Ev2 before 1.6.0.4, GS105PE before 1.6.0.4, GS408EPP before 1.0.0.15, GS808E before 1.7.0.7, GS908E before 1.7.0.3, GSS108E before 1.6.0.4, and GSS108EPP before 1.0.0.15.
How severe is CVE-2019-20699?: CVE-2019-20699 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-20699 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-20699?: CVE-2019-20699 primarily affects Netgear Gs105e Firmware. In total, 7 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-20699?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2019-20699 published?: CVE-2019-20699 was published on 2020-04-16 and last updated on 2026-06-17.

References

https://kb.netgear.com/000061230/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Switches-PSV-2018-0538

Affected products (7)

cpe:2.3:o:netgear:gs105e_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:gs105pe_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:gs408epp_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:gs808e_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:gs908e_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:gss108e_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:gss108epp_firmware:*:*:*:*:*:*:*:*

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