CVE-2025-10659: The Telenium Online Web Application is vulnerable due to a PHP endpoint accessible to unauthenticated network users that improperly handles user-supplied…

PriorityP274critical9.8CVSS 3.1

AVNACLPRNUINSUCHIHAH

EPSS

1.16%

63.2th percentile

The Telenium Online Web Application is vulnerable due to a PHP endpoint accessible to unauthenticated network users that improperly handles user-supplied input. This vulnerability occurs due to the insecure termination of a regular expression check within the endpoint. Because the input is not correctly validated or sanitized, an unauthenticated attacker can inject arbitrary operating system commands through a crafted HTTP request, leading to remote code execution on the server in the context of the web application service account.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
megasys	telenium_online_web_application	<= 8.4.21	—

Detection & IOCsextracted from sources · hover to see the quote

→Target a PHP endpoint accessible to unauthenticated network users in the Telenium Online Web Application; exploit vector is a crafted HTTP request containing OS command injection payloads ↗
→The injection point is a PHP endpoint with an insecurely terminated regular expression check — look for HTTP requests to PHP endpoints with input that bypasses regex termination (e.g., use of '$' instead of '\z' in PHP regex, allowing newline bypass) ↗
→Monitor for unauthenticated HTTP requests to Telenium Online Web Application PHP endpoints that contain shell metacharacters or command separators (e.g., ;, |, &&, newline) in user-supplied parameters ↗
→Affected versions are Telenium Online Web Application 8.4.21 and prior; flag any such version exposed on the network ↗

·No known public exploitation or proof-of-concept has been reported at time of advisory publication; no specific PHP endpoint path, parameter name, or payload pattern has been publicly disclosed ↗

CVSS provenance

nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvdv4.09.3CRITICALCVSS: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

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