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VeloCloud Orchestrator EUVDEUVD-2026-49371

| CVE-2026-17191 HIGH
SQL Injection (CWE-89)
2026-07-27 Arista GHSA-h4j3-v76m-hmm4
8.5
CVSS 4.0 · Vendor: Arista
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Obtain low-privileged Orchestrator credentials
  2. Delivery
    Send crafted input to vulnerable API endpoint
  3. Exploit
    Inject SQL into backend query
  4. Execution
    Read data beyond privileges and trigger outbound connections
  5. Impact
    Exfiltrate tenant data / pivot to internal systems

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Parameterized queries, prepared statements
MITRE ATT&CK

2 techniques across 2 tactics: Initial Access, Persistence

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Requires valid authenticated access to the VeloCloud Orchestrator On-Prem management API (PR:L) - the attacker must possess working credentials, so anonymous exploitation is not possible. Exploitation targets an input-validation flaw in an API component that manipulates backend SQL queries; no special non-default feature toggle is cited, so any reachable authenticated API session on affected on-prem versions (5.2.0 before 5.2.3.14, 6.1.0 before 6.1.3.4, 6.4.0 before 6.4.2.4) is at risk. Limiting factors: the authentication requirement, the on-prem-only affected CPE (VeloCloud Orchestrator On-Prem, not the SaaS/hosted variant), and network reachability of the orchestrator management plane (typically restricted to admin/management networks), which materially reduces exposure.

Impact

This is a moderate-priority, not top-priority, issue. The CVSS 4.0 base score is 8.5, but the signals collectively temper real-world urgency: the vector requires authentication (PR:L), so it is not exploitable by anonymous internet attackers - an attacker must already hold valid credentials on the VeloCloud Orchestrator. EPSS is 2.83% (85th percentile), which is elevated relative to the average CVE but still indicates low absolute likelihood of imminent broad exploitation. CISA SSVC classifies Exploitation as 'none', Automatable as 'no', and Technical Impact as 'partial' - all three point to a targeted, non-wormable issue rather than a mass-exploitation event. There is no CISA KEV listing and no public exploit code identified at time of analysis, so this is best treated as 'no public exploit identified at time of analysis'. The vendor (Arista) discovered it internally and states it is unaware of any malicious use. The CVSS 4.0 vector shows high vulnerable-system confidentiality (VC:H) with only Low integrity/availability, plus a subsequent-system confidentiality impact (SC:H) that aligns with the described SSRF-style unintended outbound connections. Bottom line: a real vulnerability warranting timely patching for internet- or partner-reachable orchestrators, but the authentication requirement and 'none/no/partial' SSVC profile make it a scheduled-remediation rather than emergency item.

Exploit ScenarioDerived

An attacker with valid but low-privileged VeloCloud Orchestrator credentials (e.g., a tenant/operator account, or a phished/leaked login) sends crafted input to a vulnerable API endpoint that is concatenated into a backend SQL query. By injecting SQL, they read tenant/configuration data beyond their assigned privileges and coerce the orchestrator into making attacker-directed outbound network connections (an SSRF-like effect usable to probe or reach internal systems). No public proof-of-concept exploit is currently known, and low attack complexity means a credentialed attacker could act quickly.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 2.8% exploitation probability (EPSS)

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AnalysisAIv1 – Sep 16, 2026

An authenticated SQL injection in an API component of Arista's VeloCloud Orchestrator On-Prem allows a user holding valid credentials to manipulate backend queries, exposing data beyond their intended privileges and causing the orchestrator to initiate unintended outbound network connections. Only on-prem installations on the 5.2.0, 6.1.0 and 6.4.0 branches before 5.2.3.14, 6.1.3.4 and 6.4.2.4 are affected; exploitation requires a working authenticated session (CVSS vector PR:L), so anonymous attacks are not possible, and exposure is further narrowed because the orchestrator management plane is normally reachable only from admin or management networks. EPSS is 2.83% (85th percentile) with no public exploit code and no active exploitation reported, and while the vendor's CVSS 4.0 base score is 8.5, our independent assessment treats this as a moderate-priority rather than top-priority issue given the authentication prerequisite and the on-prem-only, restricted-reachability attack surface.

RemediationAI

Vendor-released patch: upgrade VeloCloud Orchestrator On-Prem to 5.2.3.14 (from the 5.2.0 branch), 6.1.3.4 (from the 6.1.0 branch), or 6.4.2.4 (from the 6.4.0 branch) as documented in Arista security advisory 0145 at https://www.arista.com/en/support/advisories-notices/security-advisory/24365-security-advisory-0145; because the flaw is reachable by any authenticated API user on an affected build, patching should be prioritized over configuration workarounds where the orchestrator is Internet-exposed or shared with lower-trust administrative accounts. Where immediate upgrade is not possible, compensating controls should focus on the authentication prerequisite and on limiting blast radius: restrict management-API reachability to a dedicated administrative network or jump host via firewall/ACL rules (trade-off: legitimate remote operators lose direct access and must route through the bastion), review and trim orchestrator accounts so that only fully trusted administrators retain API credentials, and rotate or disable credentials for any user who should not have backend query visibility (trade-off: additional account administration overhead and possible disruption to automation using shared service accounts). Because successful exploitation can drive unintended outbound connections from the orchestrator, add or tighten egress filtering on the orchestrator subnet so it can only reach known, required management endpoints (trade-off: false positives and blocked legitimate updates/telemetry if allowlists are too narrow), and monitor orchestrator and database logs for anomalous query errors or unexpected outbound traffic as a detection backstop. Note that per the available data no public exploit code or active exploitation has been observed, and no vendor workaround short of upgrading is documented.

Affected VersionsENISA

VeloCloud Orchestrator On-Prem 5.2.0 <5.2.3.14
VeloCloud Orchestrator On-Prem 6.1.0 <6.1.3.4
VeloCloud Orchestrator On-Prem 6.4.0 <6.4.2.4

Affected Packages

euvd velocloud_orchestrator_on_prem fix: 5.2.3.14, 6.1.3.4, 6.4.2.4

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The flaw is a CWE-89 SQL injection rooted in missing input validation in an API endpoint of the VeloCloud Orchestrator, the management/control component that provisions and administers VeloCloud SD-WAN edges. Because user-supplied input is concatenated into backend query construction rather than parameterized, an authenticated caller can alter the semantics of those queries, which the assessed vector reflects as a scope change (S:C) with high confidentiality impact (C:H) and only low integrity and availability effects (I:L/A:L) - consistent with data disclosure and secondary side effects rather than full system compromise. The described ability to force the underlying system to make unintended outbound network connections suggests the injected query path can be leveraged to make the orchestrator itself reach external endpoints, which is why the impact spans beyond the original security authority. The affected CPE is specifically cpe:2.3:a:arista_networks:velocloud_orchestrator_on-prem, i.e. the customer-hosted on-premises deployment; the hosted/SaaS orchestrator is not identified as affected by the available data.

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Severity by source

Vendor (Arista) PRIMARY 8.5 CRITICAL
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/S:P
vuln.today AI 9.1 CRITICAL

Authenticated API access sets PR:L; SQLi yields high read access (C:H) with limited write/DoS (I:L/A:L); SSRF-style outbound connections to other systems justify S:C.

3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:L/SC:L/SI:N/SA:N

Primary rating from Vendor (Arista).

CVSS VectorVendor: Arista

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vulnerable system: Confidentiality
High
Vulnerable system: Integrity
Low
Vulnerable system: Availability
Low
Subsequent system: Confidentiality
High
Subsequent system: Integrity
Low
Subsequent system: Availability
Low

Lifecycle Timeline

4
Patch available
Jul 27, 2026 - 18:02 EUVD
Severity Changed
Jul 27, 2026 - 17:22 NVD
CRITICAL HIGH
CVSS changed
Jul 27, 2026 - 17:22 NVD
9.1 (CRITICAL) 8.5 (HIGH)
CVE Published
Jul 27, 2026 - 16:41 cve.org
HIGH 8.5

DescriptionCVE.org

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.

Executive ViewAI

Why It Matters

Arista VeloCloud Orchestrator On-Prem deployments on the 5.2.0, 6.1.0, and 6.4.0 branches before 5.2.3.14, 6.1.3.4, and 6.4.2.4 are affected by an authenticated SQL injection that can expose management-plane data and trigger unintended outbound connections. Exploitation requires a valid authenticated session and is limited to on-prem management networks, and there is no public exploit identified at time of analysis, so this is a moderate-priority issue rather than an emergency. Leadership should care because the orchestrator controls network services; a compromised credential could bypass intended data privileges, but Vendor-released patch: 5.2.3.14, 6.1.3.4, and 6.4.2.4 is available to close the gap.

Business Impact: Medium
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
2.8%
Top 15% exploitable
Prevalence
Medium
enterprise SD-WAN orchestrator, common in networks but a specific vendor appliance
Social Media
1
Sightings
Data Quality
5 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 2.8%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
Medium
Technical Impact
Partial

Priority Score

45
Low Medium High Critical
KEV: 0
EPSS: +3
CVSS: +42
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

SQL injection exploits the way applications construct database queries by mixing user input directly into SQL statements.

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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