How severe is CVE-2021-34766?

CVE-2021-34766 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-34766 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-34766?

CVE-2021-34766 affects Cisco Smart Software Manager On-prem. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-34766?

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

When was CVE-2021-34766 published?

CVE-2021-34766 was published on 2021-10-06 and last updated on 2026-06-17.

CVE-2021-34766

CVE-2021-34766 is a medium-severity vulnerability in Cisco Smart Software Manager On-prem with a CVSS 3.x base score of 5.4. 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: Medium (CVSS 3.x base score 5.4)
CVSS v2: 6.5
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Cisco Smart Software Manager On-prem
Published: 2021-10-06
Last modified: 2026-06-17

Description

A vulnerability in the web UI of Cisco Smart Software Manager On-Prem (SSM On-Prem) could allow an authenticated, remote attacker to elevate privileges and create, read, update, or delete records and settings in multiple functions. This vulnerability is due to insufficient authorization of the System User and System Operator role capabilities. An attacker could exploit this vulnerability by directly accessing a web resource. A successful exploit could allow the attacker to create, read, update, or delete records and settings in multiple functions without the necessary permissions on the web UI.

Frequently asked questions

What is CVE-2021-34766?: A vulnerability in the web UI of Cisco Smart Software Manager On-Prem (SSM On-Prem) could allow an authenticated, remote attacker to elevate privileges and create, read, update, or delete records and settings in multiple functions. This vulnerability is due to insufficient authorization of the System User and System Operator role capabilities. An attacker could exploit this vulnerability by directly accessing a web resource. A successful exploit could allow the attacker to create, read, update, or delete records and settings in multiple functions without the necessary permissions on the web UI.
How severe is CVE-2021-34766?: CVE-2021-34766 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-34766 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-34766?: CVE-2021-34766 affects Cisco Smart Software Manager On-prem. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-34766?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-34766 published?: CVE-2021-34766 was published on 2021-10-06 and last updated on 2026-06-17.

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ssm-priv-esc-5g35cdDJ

Affected products (1)

cpe:2.3:a:cisco:smart_software_manager_on-prem:*:*:*:*:*:*:*:*

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