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Attributed metadata history

Δ / VULNERABILITY RECORD

CVE-2026-20173.

Source-reported disclosure and enrichment record.

SEVERITY / CVSSMEDIUM / 5.8CVSS 3.1 · psirt@cisco.com
EXPLOITATION STATUSNo cached KEV assertionThe local KEV cache may be unavailable or incomplete; this does not establish absence of exploitation.
RECORD STATUSAwaiting AnalysisModified Oct 08, 2026

Disclosure summary

A vulnerability in Cisco NX-OS Software could allow an unauthenticated, remote attacker to exhaust system resources, causing a denial of service (DoS) condition. This vulnerability exists because rate limiting was improperly applied to some protocols. An attacker could exploit this vulnerability by sending a high rate of UDP or TCP connections to a data plane interface on an affected device. A successful exploit could allow the attacker to cause instability to various routing and control plane protocols through some packet loss and temporary disruptions, causing a DoS condition. This DoS condition will clear without manual intervention soon after the high rate of traffic is stopped.

Source-reported weakness categories

CWE-770

Source-specific records & product guidance

Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.

NIST NVD · NVD-CVE-2026-20173

Open original source · Updated Oct 08, 2026

Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.

Original records & references

GitHub repository matches

Repository matches are links and GitHub-supplied metadata only. They are not verified working proof-of-concept code. Each supported query is bounded to ten pages and at most 1,000 indexed results. This is not a complete index of GitHub or public exploit research. Coverage can also be limited by provider availability, rate limits, rejected metadata, incomplete search results, manual review, and the recorded refresh time.

0 reviewed associations0 unverified candidates

No stored repository matches

Repository discovery has not recorded an update for this CVE yet.

Discovery progress

0 of 3 discovery queries finished. GitHub returned 0 indexed results; 0 malformed or disallowed results were rejected.

No discovery update has been recorded for this CVE.

View all 0 stored repository matches

PUBLISHED 2026-10-07T17:16:54+00:00
MODIFIED 2026-10-08T20:08:45+00:00
INGESTED 2026-10-11T00:50:46+00:00