Widely deployed Juniper SRX network devices; MITM risk with credential exposure; core infrastructure impact.
CVE-2026-33779
MITM in Juniper SRX J-Web weak cert verification exposes creds.
Is CVE-2026-33779 being exploited?
Not confirmed. CVE-2026-33779 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 0.12% probability of exploitation in the next 30 days.
How severe is CVE-2026-33779?
CVE-2026-33779 is rated High with a CVSS score of 8.3. 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-2026-33779?
Yes. A fix has been recorded for CVE-2026-33779. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-33779 affect?
CVE-2026-33779 affects Junos OS on SRX Series (pre-versions listed: 22.4R3-S9, 23.2R2-S6, 23.4R2-S7, 24.2R2-S3, 24.4R2-S2, 25.2R1-S2, 25.2R2), SRX devices provisioning to Security Director cloud. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-33779?
Patch to patched Junos SRX releases; rotate credentials; verify cert validation.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
MITM intercept of SRX-SD cloud traffic; credentials and sensitive data exposure; possible config changes.
Immediate action required
- affected< 22.4R3-S9
- affected>= 23.2 and < 23.2R2-S6
- affected>= 23.4 and < 23.4R2-S7
- affected>= 24.2 and < 24.2R2-S3
- affected>= 24.4 and < 24.4R2-S2
- affected>= 25.2 and < 25.2R1-S2, 25.2R2
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.