How severe is CVE-2020-26917?

CVE-2020-26917 has a CVSS 3.x base score of 4.1, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2020-26917 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-26917?

CVE-2020-26917 primarily affects Netgear Ex7000 Firmware. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-26917?

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

When was CVE-2020-26917 published?

CVE-2020-26917 was published on 2020-10-09 and last updated on 2026-06-17.

CVE-2020-26917

CVE-2020-26917 is a medium-severity vulnerability in Netgear Ex7000 Firmware with a CVSS 3.x base score of 4.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 4.1)
CVSS v2: 3.5
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Netgear Ex7000 Firmware
Published: 2020-10-09
Last modified: 2026-06-17

Description

Certain NETGEAR devices are affected by stored XSS. This affects EX7000 before 1.0.1.78, R6250 before 1.0.4.34, R6400 before 1.0.1.46, R6400v2 before 1.0.2.66, R7100LG before 1.0.0.50, R7300DST before 1.0.0.70, R7900 before 1.0.3.8, R8300 before 1.0.2.128, and R8500 before 1.0.2.128.

Frequently asked questions

What is CVE-2020-26917?: Certain NETGEAR devices are affected by stored XSS. This affects EX7000 before 1.0.1.78, R6250 before 1.0.4.34, R6400 before 1.0.1.46, R6400v2 before 1.0.2.66, R7100LG before 1.0.0.50, R7300DST before 1.0.0.70, R7900 before 1.0.3.8, R8300 before 1.0.2.128, and R8500 before 1.0.2.128.
How severe is CVE-2020-26917?: CVE-2020-26917 has a CVSS 3.x base score of 4.1, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2020-26917 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-26917?: CVE-2020-26917 primarily affects Netgear Ex7000 Firmware. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-26917?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-26917 published?: CVE-2020-26917 was published on 2020-10-09 and last updated on 2026-06-17.

References

https://kb.netgear.com/000062336/Security-Advisory-for-Stored-Cross-Site-Scripting-on-Some-Extender-and-Routers-PSV-2018-0242

Affected products (9)

cpe:2.3:o:netgear:ex7000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6250_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6400_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r6400v2_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r7100lg_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r7300dst_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r7900_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r8300_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:r8500_firmware:*:*:*:*:*:*:*:*

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