VICIdial vicidial_sales_viewer.php Unauthenticated Command Injection via Basic Auth Password

published 2025-07-10 15 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-21037

cvss: 9.3; version 4.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.6%; EPSS 1.6% chance of exploitation in 30 days, percentile 76%
public exploits: 1; Metasploit

An unauthenticated command injection vulnerability exists in VICIdial versions 2.9 RC1 through 2.13 RC1, within the vicidial_sales_viewer.php component when password encryption is enabled (a non-default configuration). The application improperly passes the HTTP Basic Authentication password directly to a call to exec() without adequate sanitation. This allows remote attackers to inject and execute arbitrary operating system commands as the web server user. NOTE: This vulnerability was mitigated in 2017.

Timeline

2017-05-26 First public exploit (Metasploit exploit/unix/webapp/vicidial_user_authorization_unauth_cmd_exec)
2025-07-10 Published

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 15 mo ago (2025-07-10)

Exploit prediction

1.64% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

Metasploit exploit/unix/webapp/vicidial_user_authorization_unauth_cmd_exec VICIdial user_authorization Unauthenticated Command Execution metasploit exploit, excellent rank, 2017-05-26
raw.githubusercontent.com https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/vicidial_user_authorization_unauth_cmd_exec.rb referenced PoC, tagged "exploit" by a source, unverified
exploit-db.com https://www.exploit-db.com/exploits/42370 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	9.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA	4.0	9.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

VICIdial Group VICIdial

Classification

Weakness

CWE-78 Improper Neutralization of Special Elements used in an OS Command
CWE-20 Improper Input Validation

References

Sources

CVE List CVE-2025-34099
NVD CVE-2025-34099

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary