On affected platforms running Arista EOS with MACsec configuration, a specially crafted…
Priority LOW 23CWE-805Published · 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 · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
On affected platforms running Arista EOS with MACsec configuration, a specially crafted packet can cause the MACsec process to terminate unexpectedly. Continuous receipt of these packets with certain MACsec configurations can cause longer term disruption of dataplane traffic.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00186 8th percentileScored 2026-11-07
Fix Fixed EOS (Arista Networks): 4.30.0
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 | 4.34.3.0 – 4.34.3.1M; 4.33.0 – 4.33.5M; 4.32.0 – 4.32.7M; 4.31.0 – 4.31.9M; before 4.30.0 | 4.30.0 | Patch available | CNA |
- EOS VendorArista Affected 4.34.3.0 – 4.34.3.1M; 4.33.0 – 4.33.5M; 4.32.0 – 4.32.7M; 4.31.0 – 4.31.9M; before 4.30.0 Fixed in 4.30.0 Patch available CNA
Remediation
- Fix · CNA EOS (Arista Networks) Fixed in 4.30.0
Timeline
- 2026-10-02 Threatist record created from CVE-2025-7048
- 2026-10-03 Alias added: GHSA-8wvr-g2vr-63w6
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-2025-7048 · CVE Program
- CVE-2025-7048 · NVD
- FIRST EPSS
- GHSA-8wvr-g2vr-63w6 · GitHub Advisory Database · CC BY 4.0
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