CVE-2026-75501

✕ Withdrawn — historical dataHIGHPre-NVD 7.5
7.5CVSS

A vulnerability in the Calix EXOS firmware for the GS7 XGS (GS5239XG) residential router allows unauthenticated remote attackers to modify NAT port‑forwarding rules via the UPnP WANIPConnection service. The device exposes the MiniUPnPd control endpoint on the WAN interface on TCP port 5000 without access controls. A remote attacker can send crafted SOAP requests to add, delete, or enumerate port mappings, or to query the external IP address, without authentication. Successful exploitation may enable bypass of the firewall/NAT boundary and exposure of internal LAN services to the public internet.

CVSS v3
7.5
EchelonGraph score
Not yet assessedThis CVE record was withdrawn by its numbering authority, so there is no vulnerability to rate.
EPSS PROB
—
EPSS %ILE
—
KEV
—Not applicable: this CVE ID was withdrawn

Published

August 21, 2026

Last Modified

September 8, 2026

References (3)

Frequently asked(4)

What is CVE-2026-75501?
CVE-2026-75501 is a rejected CVE ID: its record was withdrawn on September 15, 2026 and no longer describes a vulnerability. Reason given: Vendor could not replicate the vul, and reporter is unavailable to comment.
When was the CVE record for CVE-2026-75501 published?
The CVE record for CVE-2026-75501 was published on August 21, 2026. EchelonGraph's copy of the record carries a last-modified date of September 8, 2026; the record at its source may have been updated since.
What is the CVSS score of CVE-2026-75501?
CVE-2026-75501 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-75501?
There is nothing to remediate under CVE-2026-75501: it is a rejected (withdrawn) CVE ID and no longer describes a vulnerability.