CVE-2026-104422 Zebra - Denial of Service

Zebra (zebrad) < 6.3.0 contains a denial of service caused by unvalidated coinbase scriptSig height in block sync download path, letting malicious peers delay block discovery without penalty, exploit requires network interaction with peer.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.18% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2 October 2026
Updated
15 October 2026
Weakness
CWE-345

Vendor fix

Update to version 6.3.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

← All CVEs