How severe is CVE-2018-0521?

CVE-2018-0521 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-2018-0521 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-0521?

CVE-2018-0521 affects Buffalo Wxr-1900dhp2 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-0521?

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-2018-0521 published?

CVE-2018-0521 was published on 2018-03-09 and last updated on 2026-06-17.

CVE-2018-0521

CVE-2018-0521 is a high-severity vulnerability in Buffalo Wxr-1900dhp2 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-306.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 8.3
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Buffalo Wxr-1900dhp2 Firmware
Published: 2018-03-09
Last modified: 2026-06-17

Description

Buffalo WXR-1900DHP2 firmware Ver.2.48 and earlier allows an attacker to bypass authentication and execute arbitrary commands on the device via unspecified vectors.

Frequently asked questions

What is CVE-2018-0521?: Buffalo WXR-1900DHP2 firmware Ver.2.48 and earlier allows an attacker to bypass authentication and execute arbitrary commands on the device via unspecified vectors.
How severe is CVE-2018-0521?: CVE-2018-0521 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-2018-0521 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-0521?: CVE-2018-0521 affects Buffalo Wxr-1900dhp2 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-0521?: 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-2018-0521 published?: CVE-2018-0521 was published on 2018-03-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:buffalo:wxr-1900dhp2_firmware:*:*:*:*:*:*:*:*

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