PT-2026-139839

CVE-2026-123558

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Published

2026-11-08

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Updated

2026-11-08

Description by

CVSS 3.1
7.5
High
MetricsAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Zebra zebrad before 7.0.0 contains a denial of service vulnerability that allows a malicious peer to stall checkpoint sync by cancelling the verifier rewind after a failed commit. Attackers can serve a forged block with altered authorizing data plus a restart-triggering block, leaving the verifier rejecting honest blocks until restart.
Exploitability
Fix
Researchers
Vendors
Affected products
Weakness enumeration
CWE-460: Improper Cleanup on Thrown Exception
Related identifiers
CVE-2026-123558
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