CVE-2026-121287
HIGH
MEDIUM
Priority: 0.02
BB Relevance:
60/100
Published: 2026-11-10
Modified: 2026-11-13
First seen: 2026-11-10
Status: active
Attack Surface
Adjacent
Low Complexity
No Auth
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Adjacent
AC:
Low
PR:
None
UI:
None
S:
X
AT:
Present
VC:
High
VI:
High
VA:
High
Description
An unauthenticated attacker on an adjacent network segment can send crafted RIPv2 packets to a RIP-enabled interface on the device to trigger the Rip agent crash without providing valid credentials. Repeated exploitation reliably interrupts routing service on the affected device, which may also disrupt routing for other devices that depend on it. In a worst-case scenario, the vulnerability may allow an attacker to execute arbitrary code on the affected device.
Weakness Classification (1)
Affected Software (21)
| Vendor | Product | Version |
|---|---|---|
| Arista Networks | EOS | 4.37.0F |
| Arista Networks | EOS | 4.36.0F |
| Arista Networks | EOS | 4.35.0F |
| Arista Networks | EOS | 4.34.0F |
| Arista Networks | EOS | 4.33.0F |
| Arista Networks | EOS | 4.32.0F < 4.33.0F |
| Arista Networks | EOS | 1.0.0 < 4.32.0F |
| Arista Networks | EOS | 4.37.0F |
| Arista Networks | EOS | 4.36.0F |
| Arista Networks | EOS | 4.35.0F |
| Arista Networks | EOS | 4.34.0F |
| Arista Networks | EOS | 4.33.0F |
| Arista Networks | EOS | 4.32.0F < 4.33.0F |
| Arista Networks | EOS | 1.0.0 < 4.32.0F |
| Arista Networks | EOS | 4.37.0F |
| Arista Networks | EOS | 4.36.0F |
| Arista Networks | EOS | 4.35.0F |
| Arista Networks | EOS | 4.34.0F |
| Arista Networks | EOS | 4.33.0F |
| Arista Networks | EOS | 4.32.0F < 4.33.0F |
| Arista Networks | EOS | 1.0.0 < 4.32.0F |