Arista Networks security advisory (AV26-751)
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Serial Number: AV26-751 Date: July 28, 2026 As of July 27, 2026, Arista Networks is affected by vulnerabilities in the following product: VeloCloud Orchestrator On-Prem from 5.2.0 to versions prior to 5.2.3.14 from 6.1.0 to versions prior to 6.1.3.4 from 6.4.0 to versions prior to 6.4.2.4 from 7.0.0 to versions prior to 7.0.0.1 On July 27, 2026, Cybersecurity and Infrastructure Security Agency (CISA) added CVE-2026-16812 to their Known Exploited Vulnerabilities (KEV) Database. The Cyber Centre encourages users and administrators to review the provided web links and apply any necessary updates as they become available. Security Advisory 0144 Security Advisory 0145 CISA KEV: CVE-2026-16812
CSIRTS triage
- What
- A vulnerability has been identified that is listed in the CISA KEV Database.
- Who is affected
- Users and administrators of VeloCloud Orchestrator versions specified.
- Urgency
- Remediation is urgent as the vulnerability is actively exploited.
- Action
- Users should apply necessary updates as they become available.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch VeloCloud Orchestrator
Get an email when a new VeloCloud Orchestrator advisory drops — max one per day, one-click unsubscribe.
Details
Original advisory: https://cyber.gc.ca/en/alerts-advisories/arista-networks-security-advisory-av26-751
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Exploitation confirmedCVE-2026-16812Already exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 56% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-16812 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- criticalexploitedCVE-2026-16812: VeloCloud Orchestrator (VCO) on-prem has a security issue where this issue may allow a remote …nvd
- highexploitedCISA Adds Two Known Exploited Vulnerabilities to Catalogcisa
- criticalexploitedCVE-2026-16812: Arista VeloCloud Orchestrator On-Prem OS Command Injection Vulnerabilitycisa-kev
More from Canadian Centre for Cyber Security
- unknownGoogle security advisory (AV26-768)2026-07-31
- unknownRails security advisory (AV26-767)2026-07-31
- unknownSolarWinds security advisory (AV26-766)2026-07-31
- unknownGladinet security advisory (AV26-765)2026-07-30
- unknownPHP Group security advisory (AV26-764)2026-07-30