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Vulnerabilities

Vulnerability · CVE-2026-19746

A vulnerability has been found in Calix GigaSpire 26.1.0.

Published Aug 13, 2026 · catalog updated Oct 16, 2026 · A vulnerability has been

Check if you run it

No confirmed exploitation is on record for CVE-2026-19746. EPSS is 0.47%. Act only if a listed version of A vulnerability has been is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (A vulnerability has been).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Low2.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.47%
Remediation
Not established
Affected products
See sources for product scope

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."

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-19746

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-19746. EPSS is 0.47%. Act only if a listed version of A vulnerability has been is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-404. EPSS 0.47%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 13, 2026 · NIST NVD

    Detected

    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 vid

  2. Oct 16, 2026 · NIST NVD

    Updated

    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 vid

Sources

  • CVE.orgVulnerability recordCVE-2026-19746

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-19746

    30-day exploitation probability 0.5%

    first.org
  • NIST NVDVulnerability recordCVE-2026-19746

    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 p

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.