Is CVE-2021-1132 in the CISA KEV catalog?

No. CVE-2021-1132 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-1132?

CVE-2021-1132 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2021-1132?

CVE-2021-1132 has an EPSS score of 1.61% (73th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2021-1132?

No published fix for CVE-2021-1132 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2021-1132

MEDIUMEPSS 73th pctl

5.3

CVSS v3

NVD

Description

A vulnerability in the API subsystem and in the web-management interface of Cisco Network Services Orchestrator (NSO) could allow an unauthenticated, remote attacker to access sensitive data. This vulnerability exists because the web-management interface and certain HTTP-based APIs do not properly validate user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request that contains directory traversal character sequences to an affected system. A successful exploit could allow the attacker to access sensitive files on the affected system.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

CWE-35

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploit Intelligence

1.61%probability of exploitation in 30 days

73rdpercentile

Elevated risk: more likely to be exploited than 73% of all known CVEs.

References

Vendor Advisory1

sec.cloudapps.cisco.com

Other references5

Related Vulnerabilities

Other CWE-35 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-8088	High	8.8	81%	KEV	Fix
CVE-2020-27130	Critical	9.1	66%	-	-
CVE-2024-2863	Medium	5.3	64%	-	-
CVE-2023-32714	High	8.1	43%	-	Fix
CVE-2024-36991	High	7.5	13%	-	Fix
CVE-2020-26073	High	7.5	12%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-08-05.