CVE-2003-0795: n/a vulnerability

CVE-2003-0795: The vty layer in Quagga before 0.96.4, and Zebra 0.93b and earlier, does not verify that sub-negotiation is...

The vty layer in Quagga before 0.96.4, and Zebra 0.93b and earlier, does not verify that sub-negotiation is taking place when processing the SE marker, which allows remote attackers to cause a denial of service (crash) via a malformed telnet command to the telnet CLI port, which may trigger a null dereference.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 8, 2024, 02:05 UTC (UTC+00:00)

Security readout for executives and security teams

This flaw can let a remote attacker crash affected Quagga or Zebra routing software by sending malformed telnet CLI traffic. The main business risk is routing service disruption where old versions are still deployed and their vty telnet interface is reachable. Exposure is most likely on legacy systems running Quagga before 0.96.4 or Zebra 0.93b and earlier with the vty telnet CLI port reachable by untrusted users or networks. Prioritize if legacy routing services are exposed or business operations depend on them. Defer only after confirming affected software is absent or management access is tightly controlled. Mitigation focus: Upgrade Quagga deployments to 0.96.4 or later where applicable.; Apply relevant Red Hat or Debian vendor advisory packages.; Review vendor guidance for supported Zebra remediation options..

Prepared: Jun 30, 2026, 07:58 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Nov 18, 2003, 05:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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