CyberSecBulletin
CVE-2026-2380NVD status: Awaiting Analysis

EOS: Plaintext Storage of a Password

Published Updated By the CyberSecBulletin desk

CVE-2026-2380 is a high-severity plaintext storage of a password vulnerability in EOS from Arista Networks, with a CVSS 3.1 base score of 7.4 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. The record lists versions 4.36.0F, 4.35.0F, 4.34.0F as the first without the flaw, so updating EOS to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.26% chance of exploitation within 30 days, which is low compared with other CVEs.

Next patch cycle

High severity with no evidence of exploitation so far.

What to do

  1. Update EOS to 4.36.0F or 4.35.0F or 4.34.0F or 4.33.0F, whichever matches your release line, or a later version.
  2. Read the advisory on arista.com for workarounds and exact fixed builds.

Affected products and versions

VendorProductAffected versionsFixed in
Arista NetworksEOS4.36.0F through 4.36.1F; 4.35.0F up to, but not including, 4.36.0F; 4.34.0F up to, but not including, 4.35.0F; 4.33.0F up to, but not including, 4.34.0F; before 4.33.0F4.36.0F, 4.35.0F, 4.34.0F, 4.33.0F

Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
NetworkCan be exploited remotely over a network, including the internet.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
ChangedThe attack can reach beyond the vulnerable component into other systems.
Confidentiality
LowSome restricted data can be read.
Integrity
LowLimited modification of data is possible.
Availability
LowPerformance or availability is reduced.

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L. Scored by CNA (arista.com).

Scoring systemScoreSeverityScored by
CVSS 4.05.1MediumCNA (arista.com)
CVSS 3.17.4HighCNA (arista.com)

Official description

On affected platforms running Arista EOS with OpenConfig-related services (i.e., gNMI, gNSI, RESTCONF and NETCONF), sensitive requests and responses may be unintentionally logged. These may be stored on the local EOS device or recorded on remote accounting servers. Note that gRPC-based streaming via Streaming Telemetry Agent to CloudVision is not affected by this vulnerability. Examples of sensitive information include: - Sensitive CLI commands (e.g., "username bob secret myPass") - Sensitive OpenConfig YANG leafs (e.g., "system/aaa/global/tacacs/config/secret-key") This issue was discovered internally by Arista, and the company is not aware of any malicious exploitation of this vulnerability in customer networks.

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Plaintext Storage of a Password

The product stores a password in plaintext within resources such as memory or files.

How developers prevent this class of flaw

  • Avoid storing passwords in easily accessible locations.
  • Consider storing cryptographic hashes of passwords as an alternative to storing in plaintext.
  • A programmer might attempt to remedy the password management problem by obscuring the password with an encoding function, such as base 64 encoding, but this effort does not adequately protect the password because the encoding can be detected and decoded easily.

More Plaintext Storage of a Password vulnerabilities (CWE-256)

Timeline

  1. CVE record published.
  2. CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).

References

Other vulnerabilities in EOS

All EOS vulnerabilities

Recent Plaintext Storage of a Password vulnerabilities

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