Page generated: 11 Nov 2026, 13:23 UTC
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CVE-2026-7473

On affected platforms running Arista EOS where a tunnel decapsulation configuration—such as VXLAN (Virtual Extensible LAN), decap-groups, or a GRE (Generic Routing Encapsulation) tunnel interface—is present, the switch will incorrectly decapsulate and forward other unexpected tun…

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On affected platforms running Arista EOS where a tunnel decapsulation configuration—such as VXLAN (Virtual Extensible LAN), decap-groups, or a GRE (Generic Routing Encapsulation) tunnel interface—is present, the switch will incorrectly decapsulate and forward other unexpected tunneled packet with a destination IP matching its configured decapsulation IP. This occurs because the switch does not verify the tunnel protocol type, potentially leading to the unexpected processing of non-configured tunnel traffic. This issue has been reported as being exploited in the wild.
CVSS 5.8 (MEDIUM) KEV: KNOWN CATALOG

Attention and evidence

HYPE SCORE
1.8/10
REALITY · THREAT PRIORITY
7.9/10
General review priority; not probability

Evidence confidence: Exploitation recorded

Why this priority?
  • Recorded exploitation baseline: +7.00
  • Technical severity: CVSS 5.8: +0.87
  • Fresh EPSS: 1.11%: +0.01

General review priority, not probability, victim count or asset-specific risk. A range covers missing CVSS/EPSS inputs within the current evidence state.

Sources: 7 documents and public datasets.

Hype components

Headline sample (25%)
60/100
Press, 30 days (60%)
5/100
Grounded branding (15%)
0/100
HYPE TOTAL18/100

Sources and documents

BleepingComputer
Press · 22 Oct 2026, 07:00 · Arista patches new VeloCloud Orchestrator zero-day exploited in attacks - BleepingComputer
BleepingComputer
Press · 23 Sep 2026, 07:00 · Arista patches actively exploited VeloCloud Orchestrator zero-day - BleepingComputer
Recorded Future
Press · 10 Jul 2026, 07:00 · June 2026 CVE Landscape - Recorded Future
Tech Times
Press · 23 Jun 2026, 07:00 · Cisco SD-WAN Logs Seventh Zero-Day of 2026: CISA Patch Deadline Arrives Today - Tech Times
SOC Prime
Press · 15 Jun 2026, 07:00 · CVE-2026-35273: Oracle PeopleSoft Zero-Day Exploited in the Wild - SOC Prime
See all 7 source documents
SecurityWeek
Press · 10 Jun 2026, 07:00 · No Patch Planned for Exploited Arista EOS Vulnerability - SecurityWeek
The Hacker News
Press · 10 Jun 2026, 07:00 · CISA Adds Cisco, Chrome, and Arista Flaws to KEV Catalog Amid Active Exploitation - The Hacker News

Score evolution

● Hype   ● Reality

Earlier evidence-support scores are retained in history; this chart shows only the current priority definition.

First record: hype 1.8 · reality 7.9 (2026-11-02 15:14). The curve appears once the score changes.

Public exploit evidence

1

Public exploit entries / repo candidates

See 1 repos with metrics
RepositoryStarsForksLanguageUpdated
fevar54/CVE-2026-7473---Arista-EOS-Tunnel-Decapsulation-Bypass10Python10 Jun 2026, 16:23
Evidence context and dated references

Reality is general threat/review priority, combining observed exploitation, CVSS severity and fresh EPSS. Evidence confidence is separate. This is not calibrated risk, a victim count or an asset-specific assessment. A range reflects missing numeric inputs.

Evidence in context

Confidence in exploitation evidence
Exploitation recorded
Priority basis
Recorded exploitation; CVSS 5.8; EPSS 1.1%
Attention, last 30 days
1 distinct story titles; 1 press documents; 1 publisher domains.
Technical potential
network access, no prior privileges, no user interaction.
Observed activity
Exploitation recorded in CISA KEV.
Known scale
Not quantified.
Evidence confidence basis
Trusted exploitation confirmation

Score evaluated: 2026-11-05 14:00:24.102380+00:00 · EPSS snapshot: 2026-11-05T12:03:04Z

Source event timeline
Published
05 Jun 2026, 16:22
Added to the CISA KEV catalog
09 Jun 2026, 00:00
First press mention
10 Jun 2026, 07:00
Latest press mention
22 Oct 2026, 07:00
Score calculated
05 Nov 2026, 14:00
PoCs on GitHub
1 repositories