CVE-2022-40022

CRITICAL EXPLOITED NUCLEI

Symmetricom SyncServer Unauthenticated Remote Command Execution

Title source: metasploit
STIX 2.1

Exploitation Summary

CVE-2022-40022 has been observed exploited in the wild (reported by VulnCheck KEV). EIP tracks 1 public exploit from researchers including Steve Campbell, Justin Fatuch Apt4hax, Robert Bronstein, including a Metasploit module exploits/linux/http/symmetricom_syncserver_rce. A Nuclei detection template is also available.

AI-analyzed exploit summary This Metasploit module exploits an unauthenticated command injection vulnerability in Symmetricom SyncServer's /controller/ping.php endpoint (CVE-2022-40022). It uses a backtick-injected payload to download and execute a malicious ELF binary, achieving remote code execution on vulnerable devices.

Description

Microchip Technology (Microsemi) SyncServer S650 was discovered to contain a command injection vulnerability.

Exploits (1)

metasploit WORKING POC EXCELLENT
by Steve Campbell, Justin Fatuch Apt4hax, Robert Bronstein · rubypoclinux
https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/symmetricom_syncserver_rce.rb

This Metasploit module exploits an unauthenticated command injection vulnerability in Symmetricom SyncServer's /controller/ping.php endpoint (CVE-2022-40022). It uses a backtick-injected payload to download and execute a malicious ELF binary, achieving remote code execution on vulnerable devices.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: Symmetricom SyncServer S100 through S350 (EoL), S650 before v2.2
No auth needed
Prerequisites: Network access to the target's HTTP service · Outbound connectivity from target to attacker's HTTP server (ports 25/80 TCP recommended)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Nuclei Templates (1)

Symmetricom SyncServer Unauthenticated - Remote Command Execution
CRITICALVERIFIEDby DhiyaneshDK,mielverkerken
Shodan: html:"Symmetricom SyncServer"

References (5)

Core 5

Scores

CVSS v3 9.8
EPSS 0.9247
EPSS Percentile 99.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

VulnCheck KEV 2023-11-13
CWE
CWE-77
Status published
Products (1)
microchip/syncserver_s650_firmware
Published Feb 13, 2023
Tracked Since Feb 18, 2026