CVE-2023-36846 — Juniper Junos OS SRX Series Missing Authentication for Critical Function Vulnerability
Overview
Juniper Junos OS on SRX Series contains a missing authentication for critical function vulnerability that allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity. With a specific request to user.php that doesn't require authentication, an attacker is able to upload arbitrary files via J-Web, leading to a loss of integrity for a certain part of the ...
Vulnerability details
- CVE ID
- CVE-2023-36846
- Vulnerability
- Juniper Junos OS SRX Series Missing Authentication for Critical Function Vulnerability
- Vendor
- Juniper
- Affected products
- Juniper: Junos OS
- Severity
- HIGH
- Exploitation status
- Actively exploited in the wild (CISA KEV)
- Published
- 2023-11-13
Remediation guidance
CVE-2023-36846 is in CISA's Known Exploited Vulnerabilities (KEV) catalog — U.S. federal civilian agencies are required to remediate it under Binding Operational Directive 22-01. Treat it as a priority for every environment.
Apply the vendor's official security update for Juniper the affected product as soon as possible. Where a patch is unavailable, apply vendor mitigations or isolate/segment exposed systems.
Hunt for indicators of compromise tied to this vulnerability and confirm logging/EDR coverage on affected assets.
Authoritative references
Remediate CVE-2023-36846 — and stay ahead of the next one
CVE-2023-36846 is listed in the CISA KEV catalog as actively exploited — treat remediation as urgent. Scan your domain free to see whether CVE-2023-36846 and other Juniper issues affect you and get a prioritized remediation report (full report from ₹999) — or stream the full feed of 1,600+ actively-exploited CVEs straight into your SOC.
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