CVE-2026-33800
An attacker can exploit multiple vulnerabilities in Juniper JUNOS, JUNOS Evolved, Juniper EX Series, Juniper MX Series, Juniper QFX Series, and Juniper SRX Series to cause a Denial of Service condition, disclose information, execute code, and trigger undefined behavior.
CSIRTS triage
- What
- Multiple vulnerabilities exist in Junos OS.
- Who is affected
- Deployments of Junos OS are affected.
- Urgency
- Remediation is necessary due to the potential for exploitation, though the severity is currently unknown.
- Action
- Consult Juniper's security advisories for patches or mitigations.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.27% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 19% of all EPSS-scored CVEs.
Advisory coverage (4)
- high[NEW] [high] Juniper JUNOS and JUNOS Evolved: Multiple vulnerabilitiescert-bund · 2026-07-10
- mediumCVE-2026-33800: An Unchecked Input for Loop Condition vulnerability in the Packet Forwarding Engine (pfe) of J…nvd · 2026-07-09
- unknownJuniper Junos OS Multiple Vulnerabilitieshkcert · 2026-07-09
- unknownMultiple vulnerabilities in Juniper Networks products (July 09, 2026)cert-fr-avis · 2026-07-09
External references
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[](https://www.csirts.com/cve/CVE-2026-33800)