How severe is CVE-2021-1580?

CVE-2021-1580 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2021-1580 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-1580?

CVE-2021-1580 primarily affects Cisco Application Policy Infrastructure Controller. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-1580?

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

When was CVE-2021-1580 published?

CVE-2021-1580 was published on 2021-08-25 and last updated on 2026-06-17.

CVE-2021-1580

CVE-2021-1580 is a medium-severity vulnerability in Cisco Application Policy Infrastructure Controller with a CVSS 3.x base score of 6.5. 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-77.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 9.0
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-77
Affected product: Cisco Application Policy Infrastructure Controller
Published: 2021-08-25
Last modified: 2026-06-17

Description

Multiple vulnerabilities in the web UI and API endpoints of Cisco Application Policy Infrastructure Controller (APIC) or Cisco Cloud APIC could allow a remote attacker to perform a command injection or file upload attack on an affected system. For more information about these vulnerabilities, see the Details section of this advisory.

Frequently asked questions

What is CVE-2021-1580?: Multiple vulnerabilities in the web UI and API endpoints of Cisco Application Policy Infrastructure Controller (APIC) or Cisco Cloud APIC could allow a remote attacker to perform a command injection or file upload attack on an affected system. For more information about these vulnerabilities, see the Details section of this advisory.
How severe is CVE-2021-1580?: CVE-2021-1580 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2021-1580 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-1580?: CVE-2021-1580 primarily affects Cisco Application Policy Infrastructure Controller. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-1580?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-1580 published?: CVE-2021-1580 was published on 2021-08-25 and last updated on 2026-06-17.

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-capic-mdvul-HBsJBuvW

Affected products (2)

cpe:2.3:a:cisco:application_policy_infrastructure_controller:*:*:*:*:*:*:*:*
cpe:2.3:a:cisco:cloud_application_policy_infrastructure_controller:*:*:*:*:*:*:*:*

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CVE-2026-101076 — Critical (CVSS 10.0): A vulnerability was detected in Netcore NR289-GE 1.4.5102. This affects the function system of the file…
CVE-2026-101075 — Critical (CVSS 10.0): A security vulnerability has been detected in Netcore NR289-GE 1.4.5102. The impacted element is the function system of…
CVE-2026-101072 — Critical (CVSS 10.0): A vulnerability was identified in Netcore NR289-GE 1.4.5102. This issue affects the function system of the file…

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