How severe is CVE-2018-21119?

CVE-2018-21119 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-21119 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-21119?

CVE-2018-21119 primarily affects Netgear Wac505 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-21119?

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

When was CVE-2018-21119 published?

CVE-2018-21119 was published on 2020-04-22 and last updated on 2026-06-17.

CVE-2018-21119

CVE-2018-21119 is a medium-severity vulnerability in Netgear Wac505 Firmware with a CVSS 3.x base score of 6.8. 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-74.

Key facts

Severity: Medium (CVSS 3.x base score 6.8)
CVSS v2: 5.2
EPSS exploit prediction: 1% (53rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Netgear Wac505 Firmware
Published: 2020-04-22
Last modified: 2026-06-17

Description

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects WAC505 before 5.0.5.4 and WAC510 before 5.0.5.4.

Frequently asked questions

What is CVE-2018-21119?: Certain NETGEAR devices are affected by command injection by an authenticated user. This affects WAC505 before 5.0.5.4 and WAC510 before 5.0.5.4.
How severe is CVE-2018-21119?: CVE-2018-21119 has a CVSS 3.x base score of 6.8, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-21119 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-21119?: CVE-2018-21119 primarily affects Netgear Wac505 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-21119?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-21119 published?: CVE-2018-21119 was published on 2020-04-22 and last updated on 2026-06-17.

References

https://kb.netgear.com/000060239/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Wireless-Access-Points-PSV-2018-0285

Affected products (2)

cpe:2.3:o:netgear:wac505_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:netgear:wac510_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Netgear Wac505 Firmware

CVE-2018-21097 — Critical (CVSS 9.8): Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects…
CVE-2018-21133 — Critical (CVSS 9.8): Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects…
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