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CVE-2026-73467— On affected platforms running Arista EOS, under certain circumstances plaintext shared secrets for configured Terminal Access Controller Access-Control System Plus (TACACS+) servers

Quick assessment

Affected

Arista Networks EOS

Exploitation

No confirmed in-the-wild exploitation; assess based on exposure

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Arista Networks EOS是美国Arista Networks公司的一款面向数据中心与云环境的高可编程网络设备操作系统。 Arista Networks EOS 4.36.0版本至4.36.1F版本、4.35.0版本至4.35.4M版本、4.34.0版本至4.34.7M版本和4.33.9M及之前版本存在日志信息泄露漏洞，该漏洞源于在特定情况下以明文形式暴露配置的TACACS+服务器共享密钥，可能导致敏感信息泄露。

CVSS 6.3 · Medium EPSS 0.13% · P3 Updated Sep 16, 2026

Possible ATT&CK Techniques 2 AI

T1078 · Valid Accounts T1552 · Unsecured Credentials

Affected Version Matrix 6

Vendor	Product	Version Range	Status
Arista Networks	EOS	`4.36.0≤ 4.36.1F`	affected
		`4.35.0≤ 4.35.4M`	affected
		`4.34.0≤ 4.34.7M`	affected
		`0.0.0≤ 4.33.9M`	affected
		`≤ 4.32.0`	affected
		`≤ 4.31.0`	affected

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I. Basic Information for CVE-2026-73467

Vulnerability Information

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Vulnerability Title

On affected platforms running Arista EOS, under certain circumstances plaintext shared secrets for configured Terminal Access Controller Access-Control System Plus (TACACS+) servers

Source: CVE Program / CVE List V5

Vulnerability Description

On affected platforms running Arista EOS, under certain circumstances plaintext shared secrets for configured Terminal Access Controller Access-Control System Plus (TACACS+) servers

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H

Source: CVE Program / CVE List V5

Vulnerability Type

通过日志文件的信息暴露

Source: CVE Program / CVE List V5

Vulnerability Title

Arista Networks EOS 日志信息泄露漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

Source: CNNVD (China National Vulnerability Database)

CVSS Information

N/A

Source: CNNVD (China National Vulnerability Database)

Vulnerability Type

N/A

Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor	Product	Affected Versions	CPE	Subscribe
Arista Networks	EOS	4.36.0 ~ 4.36.1F	-

II. Public POCs for CVE-2026-73467

#	POC Description	Source Link	Shenlong Link

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2026-73467

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Vendor Advisories for CVE-2026-73467 (1)

🔗 Security Advisory 0153 - Arista vendor-advisory

https://www.cve.org/CVERecord?id=CVE-2026-73467

Same Patch Batch · Arista Networks · 2026-09-15 · 12 CVEs total

CVE-2026-73437	9.6 CRITICAL	On affected platforms running Arista EOS with Dynamic Host Configuration Protocol (DHCP) r
CVE-2026-73458	8.2 HIGH	On affected platforms running Arista EOS with authenticated Bidirectional Forwarding Detec
CVE-2026-73459	7.4 HIGH	Security Advisory 0160
CVE-2026-73446	7.4 HIGH	Security Advisory 0160
CVE-2026-19655	6.5 MEDIUM	On affected platforms running Arista EOS with Dynamic Host Configuration Protocol (DHCP) r
CVE-2026-73466	6.3 MEDIUM	On affected platforms running Arista EOS, under certain circumstances plaintext user passw
CVE-2026-73465	6.3 MEDIUM	On affected platforms running Arista EOS, under certain circumstances plaintext private ke
CVE-2026-73460	6.1 MEDIUM	Security Advisory 0160
CVE-2026-19641	5.3 MEDIUM	On affected platforms running Arista EOS with password authentication configured, a specia
CVE-2026-73451	4.8 MEDIUM	On affected platforms running Arista EOS with dual switch cards and with ingress Security
CVE-2026-73444	4.7 MEDIUM	On affected platforms running Arista EOS with VRRPv2 IP Authentication Header (IP-AH) auth

IV. Related Vulnerabilities

Same product: EOS

Same vendor: Arista Networks

Same weakness: CWE-532