How severe is CVE-2022-27947?

CVE-2022-27947 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-27947 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-27947?

CVE-2022-27947 affects Netgear R8500 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-27947?

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-2022-27947 published?

CVE-2022-27947 was published on 2022-03-26 and last updated on 2026-06-17.

CVE-2022-27947

CVE-2022-27947 is a high-severity vulnerability in Netgear R8500 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-78.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-78
Affected product: Netgear R8500 Firmware
Published: 2022-03-26
Last modified: 2026-06-17

Description

NETGEAR R8500 1.0.2.158 devices allow remote authenticated users to execute arbitrary commands (such as telnetd) via shell metacharacters in the ipv6_fix.cgi ipv6_wan_ipaddr, ipv6_lan_ipaddr, ipv6_wan_length, or ipv6_lan_length parameter.

Frequently asked questions

What is CVE-2022-27947?: NETGEAR R8500 1.0.2.158 devices allow remote authenticated users to execute arbitrary commands (such as telnetd) via shell metacharacters in the ipv6_fix.cgi ipv6_wan_ipaddr, ipv6_lan_ipaddr, ipv6_wan_length, or ipv6_lan_length parameter.
How severe is CVE-2022-27947?: CVE-2022-27947 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-27947 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-27947?: CVE-2022-27947 affects Netgear R8500 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-27947?: 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-2022-27947 published?: CVE-2022-27947 was published on 2022-03-26 and last updated on 2026-06-17.

References

https://github.com/donothingme/VUL/blob/main/vul1/1.md

Affected products (1)

cpe:2.3:o:netgear:r8500_firmware:1.0.2.158:*:*:*:*:*:*:*

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