SARA / Free Tools / CVE / CVE-2017-3804

CVE-2017-3804 — A vulnerability in Intermediate System-to-Intermediate System (IS-IS) protocol p

A vulnerability in Intermediate System-to-Intermediate System (IS-IS) protocol packet processing of Cisco Nexus 5000, 6000, and 7000 Series Switches software could allow an unauthenticated, adjacent attacker to cause a reload of the affected device. Switches in the FabricPath dom

CVSS
6.1 MEDIUM
EPSS
0.34% (top 43.10%)
CWE
—
Published
2017-01-26T07:59:00.623
Last modified
2026-05-13T00:24:29.033
CVSS vector
CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

01What is this vulnerability?

A vulnerability in Intermediate System-to-Intermediate System (IS-IS) protocol packet processing of Cisco Nexus 5000, 6000, and 7000 Series Switches software could allow an unauthenticated, adjacent attacker to cause a reload of the affected device. Switches in the FabricPath domain crash because of an __inst_001__isis_fabricpath hap reset when processing a crafted link-state packet. More…

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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