How severe is CVE-2017-18726?

CVE-2017-18726 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-18726 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-18726?

CVE-2017-18726 primarily affects Netgear R6020 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-18726?

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-2017-18726 published?

CVE-2017-18726 was published on 2020-04-24 and last updated on 2026-06-17.

CVE-2017-18726

CVE-2017-18726 is a high-severity vulnerability in Netgear R6020 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-787.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 5.8
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Netgear R6020 Firmware
Published: 2020-04-24
Last modified: 2026-06-17

Description

Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects R6020 before 1.0.0.30, R6080 before 1.0.0.30, R6700v2 before 1.1.0.42, R6800 before 1.1.0.42, and R6900v2 before 1.1.0.42.

Frequently asked questions

What is CVE-2017-18726?: Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects R6020 before 1.0.0.30, R6080 before 1.0.0.30, R6700v2 before 1.1.0.42, R6800 before 1.1.0.42, and R6900v2 before 1.1.0.42.
How severe is CVE-2017-18726?: CVE-2017-18726 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-18726 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-18726?: CVE-2017-18726 primarily affects Netgear R6020 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-18726?: 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-2017-18726 published?: CVE-2017-18726 was published on 2020-04-24 and last updated on 2026-06-17.

References

https://kb.netgear.com/000051529/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-PSV-2017-2139

Affected products (5)

cpe:2.3:o:netgear:r6020_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6700_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6800_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6900_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6080_firmware:*:*:*:*:*:*:*:*

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