CVE-2023-43336

HIGHNVD 8.88.8—Elevated

8.8

Sangoma Technologies FreePBX before cdr 15.0.18, 16.0.40, 15.0.16, and 16.0.17 was discovered to contain an access control issue via a modified parameter value, e.g., changing extension=self to extension=101.

CVSS v3: 8.8
EG Score: 8.8(medium)
EPSS: 23.6%
KEV: Not listed

Published

November 2, 2023

Last Modified

November 21, 2024

References (6)

cve@mitrehttp://freepbx.com
cve@mitrehttp://sangoma.com
cve@mitrehttps://medium.com/%40janirudransh/security-disclosure-of-vulnerability-cve-2023-23336-4429d416f826
af854a3a-2127-422b-91ae-364da2661108http://freepbx.com
af854a3a-2127-422b-91ae-364da2661108http://sangoma.com
af854a3a-2127-422b-91ae-364da2661108https://medium.com/%40janirudransh/security-disclosure-of-vulnerability-cve-2023-23336-4429d416f826

Weakness Classification(1)

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

CWE-284Improper Access Control

Data Freshness Timeline

(refreshed 13× 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.

2026-06-05 06:09 UTCepss_batch
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Frequently asked(5)

What is CVE-2023-43336?

CVE-2023-43336 is a high vulnerability published on November 2, 2023. Sangoma Technologies FreePBX before cdr 15.0.18, 16.0.40, 15.0.16, and 16.0.17 was discovered to contain an access control issue via a modified parameter value, e.g., changing extension=self to extension=101.

When was CVE-2023-43336 disclosed?

CVE-2023-43336 was first published in the National Vulnerability Database on November 2, 2023, 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-2023-43336 actively exploited?

CVE-2023-43336 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 23.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2023-43336?

CVE-2023-43336 has a CVSS v3 base score of 8.8 (NVD).

How do I remediate CVE-2023-43336?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-43336, 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-2023-43336

📅 Published

🔄 Last Modified

🔗 References (6)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2023-43336?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (6)

Frequently asked(5)

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