CVE-2023-36851 added to CISA KEV: Juniper Junos OS
Status: ✅ Confirmed exploited in the wild
Date added: 2023-11-13
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Due date: 2023-11-17
Why this matters
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 webauth_operation.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 file system, which may allow chaining to other vulnerabilities.
Sources
Lyrie Verdict
Lyrie's autonomous detection layer catches active exploitation primitives at machine speed — closing the gap between disclosure and weaponization that traditional defense simply can't cover.