EUVD-2026-80591
GHSA-jr73-xp57-w3rh
Severity by source
CVSS: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:X
PR:L for authenticated config-read access, AC:H because the exposed value is a hashed localized key requiring SNMPv3 key replay, C:L/I:L for limited SNMP reads and forged traps, A:N.
Primary rating from Vendor (Arista).
CVSS VectorVendor: Arista
Lifecycle Timeline
6DescriptionCVE.org
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.
AnalysisAI
Arista EOS devices configured with SNMPv3 users store the one-way hashed, localized SNMPv3 authentication key inside the running configuration and, notably, inside sanitized configuration exports, so any authenticated user who can read either artifact obtains reusable credential material for that device's SNMP engine. With that material an attacker can issue unauthorized SNMP read operations against MIB tables or inject fraudulent trap notifications into the Network Management System, though there is no configuration-write or availability impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Requires Arista EOS with SNMP configured (specifically SNMPv3 local or remote users defined), so it is gated on SNMP being in use rather than a default state. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuinely low-priority issue despite being remotely scored. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the fixed EOS release identified in Arista Security Advisory 0178 (https://www.arista.com/en/support/advisories-notices/security-advisory/24734-security-advisory-0178) - the advisory is the authoritative source for the exact patched versions and platform coverage, and no specific fixed version string is confirmed by the data available here, so verify against it before scheduling maintenance. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
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