No exploitation reported

CVE-2021-1132

No exploitation reported by the sources we read.

Published2024-11-18
WeaknessCWE-35

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2024-11-1816:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2021-1132?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-1132?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD · CISA-ADP

Cisco network services orchestrator

Branch	Affected	Fixed in	Source
5.3	= 5.3.1	no fix published	NVD · CISA-ADP
5.4	= 5.4	no fix published	NVD
5.4	= 5.4.0.1	no fix published	NVD
5.4	= 5.4.0.2	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

sec.cloudapps.cisco.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2024-11-18
OpenCVESSVC decisionnone—
CNACVSS 3.15.3read 2026-10-23
NVDCVSS 3.17.5read 2026-10-23
CNAweakness (CWE)CWE-35read 2026-10-23
FIRST EPSSEPSS score1.6 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Published: 2024-11-18
Last Modified: 2026-06-17
NVD status: Analyzed

Frequently asked questions

What is CVE-2021-1132?

Is CVE-2021-1132 actively exploited?

Active exploitation of CVE-2021-1132 has not been confirmed. Its EPSS score was 1.6% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

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

CVE-2021-1132 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

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