CVE-2026-73466
MediumCVSS 6.3Exploitation Probability (EPSS)
Low risk1th percentile - higher than 1% of all known CVEs
Summary
On Arista EOS platforms, under certain circumstances, user passwords may be written in cleartext to log files when specialized non-standard debugging trace levels are explicitly enabled. Exploitation requires authenticated local administrative access to the device shell.
Risk Assessment
Cleartext passwords in logs can be read by anyone with log access, leading to credential disclosure and potential privilege escalation.
Recommendation
Avoid enabling non-standard debugging trace levels in production and restrict access to log files.
Other vulnerabilities in Arista EOS
See all- CVE-2026-73462Medium
On affected platforms running Arista EOS with IGMP snooping configured (enabled by default on all VLANs), a network-adjacent unauthenticated attacker can send malformed network packets on an affected VLAN to cause the IGMP snooping agent to terminate unexpectedly. This results in a temporary disruption of multicast traffic management, which may cause multicast traffic to be flooded to all ports of the affected VLAN until the service recovers.
- CVE-2026-73457Medium
Under certain circumstances on affected platforms running Arista EOS with gRPC Network Packet Sampling Interface (gNPSI) enabled, the gNPSI client credentials might be logged in clear text in local or remote accounting logs to authenticated users.
- CVE-2026-73443Medium
On affected platforms running Arista EOS with VRRPv2 IP-AH authentication configured, an unauthenticated attacker within the same layer 2 network segment on which VRRP is running can capture a legitimate authenticated VRRP advertisement and replay it indefinitely. Replayed advertisements can be used to advertise stale VRRP state, for example to prevent a backup router from taking over the virtual gateway after the original master has gone down.
- CVE-2026-73442Low
On Arista EOS platforms with VRRP enabled, peer device VRRP authentication credentials are logged in cleartext. An authenticated user with sufficient privileges can read these credentials from agent trace logs or from a system receiving forwarded log output, without access to the network segment running VRRP.
- CVE-2026-77190Medium
On affected platforms running Arista EOS, an unauthenticated attacker who is network-adjacent to the switch and able to connect to a device with PIM Sparse Mode and MLAG configured can send malformed messages that cause the Pimsm agent to terminate unexpectedly. The agent is automatically restarted, but repeated attacks can cause continuous restarts and a sustained denial of service.
- CVE-2015-8236High
Arista EOS versions before 4.11.12, 4.12 before 4.12.11, 4.13 before 4.13.14M, 4.14 before 4.14.5FX.5, and 4.15 before 4.15.0FX1.1 allow remote attackers to execute arbitrary code as root by leveraging management-plane access.
- CVE-2026-73456Critical
Under certain circumstances on affected platforms running Arista EOS with gRPC Network Packet Sampling Interface (gNPSI) enabled, an unauthenticated gNPSI client can craft a malicious request to allow arbitrary code execution, granting an attacker full administrative control over the compromised switch.
- CVE-2026-86106Critical
An unauthenticated actor with network access to the private HA interconnect may trigger sensitive HA peer functions without verification. This could result in elevated command execution on Edge units where HA is enabled.
- CVE-2026-73453Critical
An unauthenticated P4Runtime client can achieve arbitrary code execution under certain conditions on affected platforms running Arista EOS configured with P4Runtime. By crafting a malicious packet during session initiation, an attacker can obtain complete administrative control over the switch.
- CVE-2026-73447Critical
A privileged attacker can exploit gNSI Certz service on Arista EOS-based products to escalate privileges and execute arbitrary OS commands via a crafted Certz Rotate request. The Bootz service is also affected.
Original NVD description (English source)
On affected platforms running Arista EOS, under certain circumstances user passwordss may be written in clear text to log files during operations when specialized non-standard debugging trace levels are explicitly enabled. To exploit these vulnerabilities, a malicious actor must already possess authenticated local administrative access to the device shell, and specialized non-standard debugging trace levels must be explicitly enabled. This issue was discovered internally by Arista, and the company is not aware of any malicious exploitation of this vulnerability in customer networks.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS