Extended Interior Gateway Routing Protocol (EIGRP) 1.2, as implemented in Cisco IOS after…
Priority LOW 38Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
Extended Interior Gateway Routing Protocol (EIGRP) 1.2, as implemented in Cisco IOS after 12.3(2), 12.3(3)B, and 12.3(2)T and other products, allows remote attackers to cause a denial of service by sending a "spoofed neighbor announcement" with (1) mismatched k values or (2) "goodbye message" Type-Length-Value (TLV).
Why it matters now
EPSS 0.02097 81st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:extended_interior_gateway_routing_protocol:extended_interior_gateway_routing_protocol:1.2:*:*:*:*:*:*:* | 1.2 | Running on | Extended Interior Gateway Routing Protocol |
- cpe:2.3:a:extended_interior_gateway_routing_protocol:extended_interior_gateway_routing_protocol:1.2:*:*:*:*:*:*:* Versions 1.2 Running on ·Extended Interior Gateway Routing Protocol
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2005-4436
- 2026-10-03 Alias added: GHSA-4h7j-8cv2-jpwj
References
Sources
- CVE-2005-4436 · CVE Program
- CVE-2005-4436 · NVD
- FIRST EPSS
- GHSA-4h7j-8cv2-jpwj · GitHub Advisory Database · CC BY 4.0
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