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CVE-2019-9972

22
FAUCET Score

CVE-2019-9972 is a critical command injection vulnerability affecting 3CX Phone System (Debian-based installations) version 16.0.0.1570. An authenticated attacker can exploit a specific input mishandling within the PhoneSystem Terminal to execute arbitrary commands with phonesystem user privileges. This vulnerability carries a high CVSS score of 8.8, indicating a severe risk with low attack complexity and high impact on confidentiality, integrity, and availability. While no public exploit code (Metasploit, Nuclei, ExploitDB) or active exploitation (KEV) has been identified, and community discussion and media coverage are minimal, the potential for a remote, authenticated attacker to gain full system control remains significant.

Impacted Technologies

VendorProductVersion(s)CPE
16.0.0.1570CPE matchmatch criteria
cpe:2.3:o:3cx:phone_system_firmware:16.0.0.1570:*:*:*:*:*:*:*
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.61%
Probability of exploitation in next 30 days
EPSS Percentile
73.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0161 is in the 71st percentile among its peer group of 17,823 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

gosecure.net / blog
Third Party Advisory
gosecure.net / blog/2022/05/31/security-advisory-multiple-vulnerabilities-impact-3cx-phone-system
ExploitThird Party Advisory