Medium severity · published Jan 6, 2026
CVE-2025-7048
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 o
4.3
CVSS
0.2%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EO
EOS · Arista Networks
4.34.3.0 through 4.34.3.1M; 4.33.0 through 4.33.5M; 4.32.0 through 4.32.7M; 4.31.0 through 4.31.9M; before 4.30.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-7048
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-7048
www.arista.com
https://www.arista.com/en/support/advisories-notices/security-advisory/23120-security-advisory-0132
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