CVE-2026-73440

mediumpriority · track · 0EPSS 0.003 · 19 %ileDE
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.27% (19th) EPSS
CVSS 4.2 · medium
Is it mine?
4 products
Check your exposure
Who says so?
1 sources
cert_bund

EPSS · scored 2026-10-26

On affected platforms running Arista EOS with Simple Network Management Protocol (SNMP) configured, SNMPv3 local or remote user credentials may be exposed as a one-way hashed, localized key value within the device's running and sanitized configurations. An authenticated user who gains access to this sensitive information could leverage it to perform unauthorized read operations on SNMP tables or to send fraudulent trap notifications to the Network Management System (NMS). This issue was discovered internally by Arista, and the company is not aware of any malicious exploitation of this vulnerability in customer networks.

01

cvss

Technical severity, 0–10. One row per scoring source.

4.2
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 0.6–4.2

v3.14.2mediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:Nsecondary · psirt@arista.comexploitability 1.6 · impact 2.5
v4.02.3lowCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · psirt@arista.com
v4.00.6lowCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

04

affected products (4)

Products and version ranges known to be affected.

05

advisories (1)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-3287Arista EOS: Mehrere SchwachstellenDeutsch2026-09-09csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in Arista EOS ausnutzen, um erweiterte Berechtigungen, sogar Administratorrechte, zu erlangen, beliebigen Code, einschließlich Root-Code, auszuführen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder offenzulegen sowie Denial-of-Service-Zustände herbeizuführen.

06

sources

Which sources assert this record, and when.

published 2026-09-16modified 2026-09-16
07

references (1) nvd

External citations — patches, advisories, analysis.

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