How severe is CVE-2021-1354?

CVE-2021-1354 has a CVSS 3.x base score of 4.3, 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 none, and availability none.

Is CVE-2021-1354 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-1354?

CVE-2021-1354 affects Cisco Unified Computing System Central Software. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-1354?

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

When was CVE-2021-1354 published?

CVE-2021-1354 was published on 2021-02-04 and last updated on 2026-06-17.

CVE-2021-1354

CVE-2021-1354 is a medium-severity vulnerability in Cisco Unified Computing System Central Software with a CVSS 3.x base score of 4.3. 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-295.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 2.7
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Cisco Unified Computing System Central Software
Published: 2021-02-04
Last modified: 2026-06-17

Description

A vulnerability in the certificate registration process of Cisco Unified Computing System (UCS) Central Software could allow an authenticated, adjacent attacker to register a rogue Cisco Unified Computing System Manager (UCSM). This vulnerability is due to improper certificate validation. An attacker could exploit this vulnerability by sending a crafted HTTP request to the registration API. A successful exploit could allow the attacker to register a rogue Cisco UCSM and gain access to Cisco UCS Central Software data and Cisco UCSM inventory data.

Frequently asked questions

What is CVE-2021-1354?: A vulnerability in the certificate registration process of Cisco Unified Computing System (UCS) Central Software could allow an authenticated, adjacent attacker to register a rogue Cisco Unified Computing System Manager (UCSM). This vulnerability is due to improper certificate validation. An attacker could exploit this vulnerability by sending a crafted HTTP request to the registration API. A successful exploit could allow the attacker to register a rogue Cisco UCSM and gain access to Cisco UCS Central Software data and Cisco UCSM inventory data.
How severe is CVE-2021-1354?: CVE-2021-1354 has a CVSS 3.x base score of 4.3, 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 none, and availability none.
Is CVE-2021-1354 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-1354?: CVE-2021-1354 affects Cisco Unified Computing System Central Software. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-1354?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-1354 published?: CVE-2021-1354 was published on 2021-02-04 and last updated on 2026-06-17.

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucs-invcert-eOpRvCKH

Affected products (1)

cpe:2.3:a:cisco:unified_computing_system_central_software:*:*:*:*:*:*:*:*

More vulnerabilities in Cisco Unified Computing System Central Software

CVE-2015-0701 — Critical (CVSS 10.0): Cisco UCS Central Software before 1.3(1a) allows remote attackers to execute arbitrary commands via a crafted HTTP…
CVE-2016-1352 — Critical (CVSS 9.8): Cisco Unified Computing System (UCS) Central Software 1.3(1b) and earlier allows remote attackers to execute arbitrary…
CVE-2018-0113 — High (CVSS 8.8): A vulnerability in an operations script of Cisco UCS Central could allow an authenticated, remote attacker to execute…
CVE-2018-0094 — High (CVSS 7.5): A vulnerability in IPv6 ingress packet processing for Cisco UCS Central Software could allow an unauthenticated, remote…
CVE-2014-0730 — Medium (CVSS 6.8): Cisco Unified Computing System (UCS) Central Software 1.1 and earlier allows local users to gain privileges via a CLI…
CVE-2016-1401 — Medium (CVSS 6.1): Cross-site scripting (XSS) vulnerability in the management interface in Cisco Unified Computing System (UCS) Central…

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