CVE-2025-8873— Arista EOS Dataplane Denial of Service via Malformed IPsec Packet
Affected Version Matrix 5
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Arista Networks | EOS | 4.33.0M≤ 4.33.4M | affected |
4.32.0M≤ 4.32.6.1M | affected | ||
4.31.0M≤ 4.31.7.1M | affected | ||
4.30.0M≤ 4.30.10M | affected | ||
4.29.0M≤ 4.29.10.1M | affected |
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I. Basic Information for CVE-2025-8873
Vulnerability Information
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Vulnerability Title
Arista EOS Dataplane Denial of Service via Malformed IPsec Packet
Source: NVD (National Vulnerability Database)
Vulnerability Description
On affected platforms running Arista EOS with IPsec configured, a specially crafted packet can cause the dataplane to stop processing all IPsec traffic. The control plane may detect this condition, and attempt to reset the IPsec processing pipeline. After reset traffic may not resume being processed. There is no impact to non-IPsec traffic or to IPsec traffic not originating or terminating on the system. This issue was reported by an Arista customer.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1286
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，该漏洞源于配置IPsec时，特制数据包可能导致数据平面停止处理所有IPsec流量，控制平面可能检测到该情况并尝试重置IPsec处理管道，重置后流量可能无法恢复处理。
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 | 4.33.0M ~ 4.33.4M | - |
II. Public POCs for CVE-2025-8873
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2025-8873 (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-2023-5502 | 5.9 MEDIUM | On affected platforms running Arista EOS with 802.1x authentication configured on the acce |
| 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-2023-5502
On affected platforms running Arista EOS with 802.1x authent - 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-1286
- CVE-2019-25720
Dräger SC Monitoring Devices DoS via Malformed Network Packe - CVE-2021-4479
Dräger Atlan A350 1.00 <= 1.01 DoS via Medibus Interface - CVE-2019-25723
Dräger Perseus A500 2.00-2.02 DoS via Medibus Interface - CVE-2026-24092
Improper Validation of Syntactic Correctness of Input in Dis - CVE-2026-24091
Improper Validation of Syntactic Correctness of Input in Dis
V. Comments for CVE-2025-8873
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