A specially crafted packet can cause the premature expiry of multicast forwarding state…
Priority LOW 31CWE-670Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
A specially crafted packet can cause the premature expiry of multicast forwarding state on affected interfaces, potentially resulting in temporary multicast traffic loss during the affected period.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0029 21st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Arista | EOS | 1.0.0 to before 4.33.0F; 4.33.0F – 4.33.8M; 4.34.0F – 4.34.7.1M; 4.35.0F – 4.35.5M; 4.36.0F – 4.36.1F | — | No fix listed | CNA |
- EOS VendorArista Affected 1.0.0 to before 4.33.0F; 4.33.0F – 4.33.8M; 4.34.0F – 4.34.7.1M; 4.35.0F – 4.35.5M; 4.36.0F – 4.36.1F Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Arista Networks EOS 4.33.0F
5 records Highest priority Priority MEDIUM 1 MEDIUM, 4 LOW
Other records, highest priority first
- TI-2026-51570 On affected platforms running Arista EOS with Open Shortest Path First version 3 (OSPFv3)…Priority MEDIUM 45
- TI-2026-51556 Reachable assertion in Arista EOSPriority LOW 30
- TI-2026-51558 On affected platforms running Arista EOS with Simple Network Management Protocol (SNMP)…Priority LOW 12
Timeline
- 2026-10-02 Threatist record created from CVE-2026-73468
- 2026-10-03 Alias added: GHSA-x98h-73r2-4gwf
References
More Arista vulnerabilities
- TI-2026-79524 Privilege escalation in Arista VeloCloud Orchestrator on-premises KEVCVSS 4.0CRITICAL 9.4
- TI-2026-63212 Improper input validation in Arista VeloCloud Orchestrator On-Prem KEVCVSS 4.0CRITICAL 9.5
- TI-2026-13992 VeloCloud Orchestrator OS Command Injection KEVCVSS 4.0CRITICAL 10.0
- TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
- TI-2014-05157 GNU Bash through 4.3 processes trailing strings after function definitions in the values… KEVCVSS 3.1CRITICAL 9.8
- TI-2026-23989 crypto: algif_aead - Revert to operating out-of-place KEVCVSS 3.1HIGH 7.8
Sources
- CVE-2026-73468 · CVE Program
- CVE-2026-73468 · NVD
- FIRST EPSS
- GHSA-x98h-73r2-4gwf · GitHub Advisory Database · CC BY 4.0
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