CVE-2023-24509

Root access via standby supervisor SSH login

Published Apr 13, 2023 · Updated Feb 7, 2025

Privilege escalation in affected Arista EOS releases allows remote authenticated users to gain root access on a standby supervisor. The standby supervisor accepts an SSH login initiated by an unprivileged account but creates the session with root privileges. Exploitation requires valid credentials, two active supervisor modules, and RPR or SSO redundancy.

CVSS severity9.3
Critical
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in affected Arista EOS releases allows remote authenticated users to gain root access on a standby supervisor. The standby supervisor accepts an SSH login initiated by an unprivileged account but creates the session with root privileges. Exploitation requires valid credentials, two active supervisor modules, and RPR or SSO redundancy.

The record

CVE
CVE-2023-24509
Published
Apr 13, 2023
Updated
Feb 7, 2025
Vendor
Arista Networks
Product
Arista EOS
Classifications
CWE-269, T1548
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 7, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.23.0 4.23.13M
  2. Affected versionversion=4.24.0 <=4.24.10M
  3. Affected versionversion=4.25.0 <=4.25.9M
  4. Affected versionversion=4.27.0 <=4.27.6M
  5. Affected versionversion=4.28.0 <=4.28.3M
  6. Affected versionversion=4.286.0 <=4.26.8M

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Arista Networks · Arista EOSversion=4.23.0 4.23.13M; version=4.24.0 <=4.24.10M; version=4.25.0 <=4.25.9M; version=4.27.0 <=4.27.6M; version=4.28.0 <=4.28.3M; version=4.286.0 <=4.26.8M

Published CVSS scores

9.3Arista NetworksCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1548Abuse Elevation Control Mechanism

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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