CVE-2026-19746
MediumCVSS 4.3Exploitation Probability (EPSS)
Low risk39th percentile - higher than 39% of all known CVEs
Summary
A vulnerability has been found in Calix GigaSpire 26.1.0 in an unknown function of the file traceroute.cmd, leading to denial of service. The attack can be launched remotely, and the exploit has been publicly disclosed. The existence of this vulnerability is currently uncertain, as the vendor states they did not observe session interruption or loss of EWI availability during testing.
Risk Assessment
A potential attacker could remotely cause a denial of service, disrupting the management interface. Due to the dispute with the vendor, the actual risk requires further verification.
Recommendation
Monitor official Calix advisories regarding this vulnerability and apply available updates if needed. Restrict access to the management interface from untrusted networks.
Other vulnerabilities in Calix GigaSpire
Original NVD description (English source)
A vulnerability has been found in Calix GigaSpire 26.1.0. The affected element is an unknown function of the file traceroute.cmd. The manipulation leads to denial of service. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The presence of this vulnerability remains uncertain at this time. The vendor explains: "After reviewing the researcher's videos, we repeated the test using his described setup: the traceroute cancel request was sent while a second client was connected to the EWI. The second client remained connected and was not interrupted, and we did not observe a forced logout, session invalidation, or loss of EWI availability."
Vulnerability data from NVD (NIST) · CISA KEV · EPSS