Loading vulnerability…
CVE-2026-75501 is a missing-authentication vulnerability in Calix EXOS firmware affecting the GS7 XGS residential router platform, including the GS5239XG. In affected firmware, the MiniUPnPd UPnP WANIPConnection SOAP control service is bound to the public WAN interface on TCP port 5000 and accepts requests without authentication or equivalent access controls. A remote attacker on the internet can send crafted SOAP actions to invoke sensitive UPnP functions, including adding, deleting, and enumerating NAT port mappings and querying the router’s external IP address. Because these functions are exposed through the WAN-facing interface rather than being restricted to trusted local clients, the flaw allows external manipulation of firewall and NAT behavior and can create persistent inbound exposure of internal network services.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
13 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Authentication bypass / missing authentication vulnerability in Calix GS7 XGS (GS5239XG, sold as GigaSpire 7u10txg) routers where the MiniUPnPd / UPnP WANIPConnection SOAP control endpoint is exposed on the public WAN interface on TCP port 5000, allowing remote unauthenticated attackers to create, delete, and view port forwarding rules and expose internal devices to the internet.
A missing authentication vulnerability in Calix GS7 XGS (GS5239XG) routers that exposes the MiniUPnPd WANIPConnection SOAP service on the public WAN interface, allowing remote unauthenticated attackers to create, delete, or enumerate port mappings and expose internal devices to the internet.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.