SecuriTricks - CVE-2025-7048

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.

Product(s) Impacted

Vendor	Product	Versions
Arista	Arista Eos Macsec	* *

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-805

Buffer Access with Incorrect Length Value

The product uses a sequential operation to read or write a buffer, but it uses an incorrect length value that causes it to access memory that is outside of the bounds of the buffer.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	arista	arista_eos	/	/	/	/	/	/	/	/
a	arista	macsec	/	/	/	/	/	/	/	/

References

https://www.arista.com/en/support/advisories-notices/security-advisory/23120-security-advisory-0132

CVSS Score

5.3 / 10

CVSS Data - 4.0

Attack Vector: ADJACENT
Attack Complexity: LOW
Attack Requirements: NONE
Privileges Required: NONE
User Interaction: NONE
Scope:
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: LOW
Exploit Maturity: NOT_DEFINED

CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

View Vector String

Timeline

Published: Jan. 6, 2026, 8:16 p.m.
Last Modified: Jan. 6, 2026, 8:16 p.m.

Status : Received

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

psirt@arista.com

CVE-2025-7048