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No exploitation reportedFix available

CVE-2021-1538

No exploitation reported by the sources we read.

  • Published2021-06-04
  • Fixed in2.9.1
  • WeaknessCWE-78

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 configuration dashboard of Cisco Common Services Platform Collector (CSPC) could allow an authenticated, remote attacker to execute arbitrary code. This vulnerability is due to insufficient sanitization of configuration entries. An attacker could exploit this vulnerability by logging in as a super admin and entering crafted input to configuration options on the CSPC configuration dashboard. A successful exploit could allow the attacker to execute remote code as root.

Timeline

dates in UTC
  1. 2021-06-0417:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 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-2021-1538?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2021-1538?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Cisco common services platform collector
BranchAffectedFixed in
2.9< 2.9.12.9.1

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

Fix

  1. Update Cisco common services platform collector to 2.9.1

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionnone2024-11-07
  • OpenCVESSVC decisionnone—
  • CNACVSS 3.14.7read 2026-10-23
  • NVDCVSS 3.17.2read 2026-10-23
  • NVDCVSS 2.09read 2026-10-23
  • CNAweakness (CWE)CWE-78read 2026-10-23
  • FIRST EPSSEPSS score1.8 %2026-10-22

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Published
2021-06-04
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2021-1538?

A vulnerability in the configuration dashboard of Cisco Common Services Platform Collector (CSPC) could allow an authenticated, remote attacker to execute arbitrary code. This vulnerability is due to insufficient sanitization of configuration entries. An attacker could exploit this vulnerability by logging in as a super admin and entering crafted input to configuration options on the CSPC configuration dashboard. A successful exploit could allow the attacker to execute remote code as root.

Is CVE-2021-1538 actively exploited?

Active exploitation of CVE-2021-1538 has not been confirmed. Its EPSS score was 1.8% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-1538?

CVE-2021-1538 has a CVSS v3 base score of 7.2 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

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