CVE-2021-45966

CRITICALNVD 9.89.8—

9.8

An issue was discovered in Pascom Cloud Phone System before 7.20.x. In the management REST API, /services/apply in exd.pl allows remote attackers to execute arbitrary code via shell metacharacters.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 93.5%
KEV: Not listed

Published

March 18, 2022

Last Modified

November 21, 2024

References (6)

cve@mitrehttps://kerbit.io/research/read/blog/4
cve@mitrehttps://tutorialboy24.blogspot.com/2022/03/the-story-of-3-bugs-that-lead-to.html
cve@mitrehttps://www.pascom.net/doc/en/release-notes/
af854a3a-2127-422b-91ae-364da2661108https://kerbit.io/research/read/blog/4
af854a3a-2127-422b-91ae-364da2661108https://tutorialboy24.blogspot.com/2022/03/the-story-of-3-bugs-that-lead-to.html
af854a3a-2127-422b-91ae-364da2661108https://www.pascom.net/doc/en/release-notes/

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 13:10 UTCepss_batch
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Frequently asked(5)

What is CVE-2021-45966?

CVE-2021-45966 is a critical vulnerability published on March 18, 2022. An issue was discovered in Pascom Cloud Phone System before 7.20.x. In the management REST API, /services/apply in exd.pl allows remote attackers to execute arbitrary code via shell metacharacters.

When was CVE-2021-45966 disclosed?

CVE-2021-45966 was first published in the National Vulnerability Database on March 18, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-45966 actively exploited?

CVE-2021-45966 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 93.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-45966?

CVE-2021-45966 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2021-45966?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-45966, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-45966

📅 Published

🔄 Last Modified

🔗 References (6)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-45966?

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Published

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References (6)

Frequently asked(5)

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