[CRITICAL] CVE-2026-28773 — CVSS 9.3 (March 4, 2026)

A CRITICAL-severity vulnerability identified as CVE-2026-28773 has been published on March 4, 2026 with a CVSS base score of 9.3. This security advisory provides a detailed breakdown of the vulnerability, its potential impact, weakness classification, and actionable steps to protect your systems.

Vulnerability Details

CVE ID: CVE-2026-28773
Severity: CRITICAL
CVSS Score: 9.3
Published: March 4, 2026
Weakness (CWE): CWE-78

Technical Description

The web-based Ping diagnostic utility (/IDC_Ping/main.cgi) in International Datacasting Corporation (IDC) SFX Series SuperFlex Satellite  Receiver Web Management Interface version 101 is vulnerable to OS Command Injection. The application insecurely parses the `IPaddr` parameter. An authenticated attacker can bypass server-side semicolon exclusion checks by using alternate shell metacharacters (such as the pipe `|` operator) to append and execute arbitrary shell commands with root privileges.

Potential Impact

If exploited, this critical-severity vulnerability could allow an attacker to cause significant damage to affected systems. Organizations running affected software should treat this as a priority remediation item.

Recommended Action

No official patch is available yet. Until one is released:

1. Monitor the official NVD page and vendor channels for patch announcements.
2. Restrict access to the affected system or service where possible.
3. Apply network-level mitigations such as firewall rules or WAF policies.
4. Enable logging and alerting for anomalous activity related to this vulnerability.
5. Review your incident response plan in case of active exploitation.

View full details on NVD →

References

• Reference 1

Related Security Advisories

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• [CRITICAL] CVE-2026-22886 — CVSS 9.8 (March 3, 2026) — CRITICAL / CVSS 9.8
• [CRITICAL] CVE-2026-3010 — CVSS 9.3 (February 28, 2026) — CRITICAL / CVSS 9.3