CVE-2022-29303

CVE-2022-29303 is an unauthenticated OS command injection flaw (CWE-78) in Contec SolarView Compact version 6.00, reachable through the conf_mail.php script. Because the CVSS vector requires no privileges and no user interaction over the network, a remote attacker can send crafted input to the vulnerable script and have it executed as operating system commands. Successful exploitation yields remote code execution on the device with the privileges of the web service, which attackers can leverage to recruit exposed monitors into Mirai-style IoT botnets or as a foothold into energy-sector networks. Affected organizations are operators of internet-facing SolarView Compact (SV-CPT-MC310 firmware) solar power monitoring systems. The flaw is under active exploitation: it was added to CISA's Known Exploited Vulnerabilities catalog on 2023-07-13, carries a 98% EPSS probability of exploitation within 30 days, and public reporting describes attacks threatening hundreds of solar power stations.

What to do: Apply Contec's updates per vendor instructions (CISA's required action), or discontinue use of the product if updates are unavailable; the affected release in the data is SolarView Compact 6.00, so update to any vendor-provided fixed release. Limit or remove internet exposure of the SolarView web interface and review access logs for unsolicited requests to conf_mail.php. Defenders should also watch for signs of IoT botnet compromise, as this flaw is among those used in Mirai campaigns.