CVE-2023-5502— On affected platforms running Arista EOS with 802.1x authentication configured on the access/trunk ports, a malicious supplicant may bypass authentication.
Possible ATT&CK Techniques 1AI
T1562.001Affected Version Matrix 8
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Arista Networks | EOS | 4.31.0≤ 4.31.0F | affected |
4.30.0≤ 4.30.4M | affected | ||
4.29.0≤ 4.29.6M | affected | ||
4.28.0≤ 4.28.8M | affected | ||
4.27.0≤ 4.27.11M | affected | ||
4.26.0≤ 4.26.11M | affected | ||
4.25.0≤ 4.25.11M | affected | ||
4.24.0≤ 4.24.11M | affected |
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I. Basic Information for CVE-2023-5502
Vulnerability Information
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Vulnerability Title
On affected platforms running Arista EOS with 802.1x authentication configured on the access/trunk ports, a malicious supplicant may bypass authentication.
Source: NVD (National Vulnerability Database)
Vulnerability Description
On affected platforms running Arista EOS with 802.1x authentication configured on the access/trunk ports, and routing enabled on the access VLAN of the ports, a malicious supplicant may be able to bypass the requirement to perform 802.1x authentication.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
认证机制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Arista EOS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Arista EOS是美国Arista公司的一个完全可编程的、高度模块化的、基于Linux的网络操作系统。 Arista EOS存在安全漏洞，该漏洞源于在配置802.1x认证的访问/中继端口上，且端口访问VLAN启用了路由功能时，恶意请求者可能绕过802.1x认证要求。
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 | 4.31.0 ~ 4.31.0F | - |
II. Public POCs for CVE-2023-5502
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2023-5502 (1)
Same Patch Batch · Arista Networks · 2026-06-04 · 6 CVEs total
| CVE-2024-27892 | 9.6 CRITICAL | On affected platforms running Arista EOS with OpenConfig configured, a gNMI Set request ca |
| CVE-2024-27890 | 9.6 CRITICAL | On affected platforms running Arista EOS with OpenConfig configured, a gNMI Set request ca |
| CVE-2025-8873 | 7.5 HIGH | Arista EOS Dataplane Denial of Service via Malformed IPsec Packet |
| CVE-2024-27891 | 5.3 MEDIUM | On affected platforms running Arista EOS with MACsec and egress ACLs configured on the sam |
| CVE-2024-6858 | In Arista’s EOS when in 802.1X mode, multi-auth unauthenticated hosts might be allowed acc |
IV. Related Vulnerabilities
Same product: EOS
- CVE-2026-2379
Arista EOS IPsec Tunnel Sequence Number Mismatch via Interfa - CVE-2026-7473
Arista EOS Unexpected Tunnel Protocol Decapsulation and Forw - CVE-2025-8873
Arista EOS Dataplane Denial of Service via Malformed IPsec P - CVE-2024-27892
On affected platforms running Arista EOS with OpenConfig con - CVE-2024-27890
On affected platforms running Arista EOS with OpenConfig con
Same vendor: Arista Networks
- CVE-2026-25624
Arista Edge Threat Management NGFW UI Administrative Cross-S - CVE-2026-25623
Arista Edge Threat Management NGFW UI Arbitrary Command Exec - CVE-2026-25622
Arista Edge Threat Management NGFW Captive Portal Custom Han - CVE-2026-25621
Arista Edge Threat Management NGFW Reports Application Insec - CVE-2026-25620
Arista Edge Threat Management NGFW Captive Portal Encrypted
Same weakness: CWE-287
- CVE-2026-53591
FreeScout Vulnerable to Unauthenticated Conversation Thread - CVE-2026-12341
SailPoint IdentityIQ Improper Bearer Token Validation Vulner - CVE-2026-48812
FreeScout Allows Unauthenticated Access to Legacy Attachment - CVE-2026-46715
Flask-Security-Too OAuth reauthentication freshness bypass v - CVE-2026-42210
Webmin 2FA requirement bypass
V. Comments for CVE-2023-5502
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