How severe is CVE-2019-17137?

CVE-2019-17137 has a CVSS 3.x base score of 9.4, 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 low, and availability high.

Is CVE-2019-17137 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-17137?

CVE-2019-17137 affects Netgear Ac1200 R6220 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-17137?

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-2019-17137 published?

CVE-2019-17137 was published on 2020-02-10 and last updated on 2026-06-17.

CVE-2019-17137

CVE-2019-17137 is a critical-severity vulnerability in Netgear Ac1200 R6220 Firmware with a CVSS 3.x base score of 9.4. 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-626.

Key facts

Severity: Critical (CVSS 3.x base score 9.4)
CVSS v2: 7.5
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-626
Affected product: Netgear Ac1200 R6220 Firmware
Published: 2020-02-10
Last modified: 2026-06-17

Description

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR AC1200 R6220 Firmware version 1.1.0.86 Smart WiFi Router. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of path strings. By inserting a null byte into the path, the user can skip most authentication checks. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-8616.

Frequently asked questions

What is CVE-2019-17137?: This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR AC1200 R6220 Firmware version 1.1.0.86 Smart WiFi Router. Authentication is not required to exploit this vulnerability. The specific flaw exists within the processing of path strings. By inserting a null byte into the path, the user can skip most authentication checks. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-8616.
How severe is CVE-2019-17137?: CVE-2019-17137 has a CVSS 3.x base score of 9.4, 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 low, and availability high.
Is CVE-2019-17137 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-17137?: CVE-2019-17137 affects Netgear Ac1200 R6220 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-17137?: 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-2019-17137 published?: CVE-2019-17137 was published on 2020-02-10 and last updated on 2026-06-17.

References

https://www.zerodayinitiative.com/advisories/ZDI-19-866/

Affected products (1)

cpe:2.3:o:netgear:ac1200_r6220_firmware:1.1.0.86:*:*:*:*:*:*:*

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