How severe is CVE-2021-1400?

CVE-2021-1400 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-2021-1400 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-1400?

CVE-2021-1400 primarily affects Cisco Wap125 Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-1400?

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-2021-1400 published?

CVE-2021-1400 was published on 2021-05-06 and last updated on 2026-06-17.

CVE-2021-1400

CVE-2021-1400 is a high-severity vulnerability in Cisco Wap125 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-269.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Cisco Wap125 Firmware
Published: 2021-05-06
Last modified: 2026-06-17

Description

Multiple vulnerabilities in the web-based management interface of certain Cisco Small Business 100, 300, and 500 Series Wireless Access Points could allow an authenticated, remote attacker to obtain sensitive information from or inject arbitrary commands on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

Frequently asked questions

What is CVE-2021-1400?: Multiple vulnerabilities in the web-based management interface of certain Cisco Small Business 100, 300, and 500 Series Wireless Access Points could allow an authenticated, remote attacker to obtain sensitive information from or inject arbitrary commands on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
How severe is CVE-2021-1400?: CVE-2021-1400 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-2021-1400 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-1400?: CVE-2021-1400 primarily affects Cisco Wap125 Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-1400?: 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-2021-1400 published?: CVE-2021-1400 was published on 2021-05-06 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:o:cisco:wap125_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:wap131_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:wap150_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:wap351_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:wap361_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:cisco:wap581_firmware:*:*:*:*:*:*:*:*

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