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CVE-2026-17191

CRITICALCVSS 9.1/10EPSS 0.35%

Last modified

CVE-2026-17191 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. An input validation vulnerability exists in an API component of the orchestrator. An authenticated user can exploit this flaw to manipulate backend queries, which may result in unauthorized access to data beyond their intended privileges and cause the underlying system to initiate unintended outbound network connections. This issue was discovered internally by Arista and the company is not aware of any malicious uses of this issue in customer networks.. EPSS estimates a 0.35% chance of exploitation in the next 30 days.

Description

An input validation vulnerability exists in an API component of the orchestrator. An authenticated user can exploit this flaw to manipulate backend queries, which may result in unauthorized access to data beyond their intended privileges and cause the underlying system to initiate unintended outbound network connections. This issue was discovered internally by Arista and the company is not aware of any malicious uses of this issue in customer networks.

Metrics

CVSS 3.1
9.1/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L

CVSS 4.0
8.5/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:H/SI:L/SA:L/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:P/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability
0.35%

27.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
Arista NetworksVeloCloud Orchestrator On-Prem>= 5.2.0, < 5.2.3.14; >= 6.1.0, < 6.1.3.4; >= 6.4.0, < 6.4.2.4

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-17191?
An input validation vulnerability exists in an API component of the orchestrator. An authenticated user can exploit this flaw to manipulate backend queries, which may result in unauthorized access to data beyond their intended privileges and cause the underlying system to initiate unintended outbound network connections. This issue was discovered internally by Arista and the company is not aware of any malicious uses of this issue in customer networks.
How severe is CVE-2026-17191?
CVE-2026-17191 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.35% probability of exploitation in the next 30 days.
How do I fix CVE-2026-17191?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST