Juniper Junos is a widely deployed network OS; a local CLI injection enabling root leads to full device compromise and potential network disruption across enterprises and service providers.
CVE-2026-102079
OS command injection in Juniper Junos CLI 'request csds' enabling root takeover.
Is CVE-2026-102079 being exploited?
Not confirmed. CVE-2026-102079 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.66% probability of exploitation in the next 30 days.
How severe is CVE-2026-102079?
CVE-2026-102079 is rated High with a CVSS score of 8.5. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-102079?
Yes. A fix has been recorded for CVE-2026-102079. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-102079 affect?
CVE-2026-102079 affects Juniper Junos OS 24.4 versions before 24.4R2-S4, Juniper Junos OS 25.2 versions before 25.2R2-S1, Juniper Junos OS 25.4 versions before 25.4R1-S3. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-102079?
Apply vendor updates to fixed Junos builds or restrict CLI access until patched.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Local low-priv attacker can inject OS commands via 'request csds', gaining root and full device control, configuration modification, or persistent access.
Immediate action required
- affected>= 24.4 and < 24.4R2-S4
- affected>= 25.2 and < 25.2R2-S1
- affected>= 25.4 and < 25.4R1-S3
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.