EUVD-2026-80003
GHSA-986v-7qw9-p5p6
Severity by source
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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
Primary rating from Vendor (arista) · only source for this CVE.
CVSS VectorVendor: arista
Lifecycle Timeline
2DescriptionCVE.org
On affected platforms running Arista EOS with Dynamic Host Configuration Protocol (DHCP) relay/snooping configured with the information option (Option 82), or with the DHCP server configured with match criteria based on the information option, an unauthenticated attacker connected to a client-facing VLAN(s) where the relay is configured can send a specially crafted packet that causes the DHCP Relay service to restart.
AnalysisAI
Denial of service in Arista EOS DHCP relay and snooping deployments allows an unauthenticated attacker with Layer 2 access to a client-facing VLAN to crash the DHCP Relay service by sending a specially crafted DHCP packet. Triggering requires the information option (Option 82) to be inserted by the relay/snooping configuration, or a DHCP server whose match criteria reference Option 82. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Threat intelligence, references, and detailed analysis are available after sign-in.
Same weakness CWE-20 – Improper Input Validation
View allSame technique Information Disclosure
View allShare
External POC / Exploit Code
Leaving vuln.today