CVE-2023-36851
MEDIUMA Missing Authentication for Critical Function vulnerability in Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause limited impact to…
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Description
A Missing Authentication for Critical Function vulnerability in Juniper Networks Junos OS on SRX Series 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 and download arbitrary files via J-Web, leading to a loss of
integrity or confidentiality, which may allow chaining to other vulnerabilities.
This issue affects Juniper Networks Junos OS on SRX Series:
21.2 versions prior to 21.2R3-S8;
- 21.4
versions prior to
21.4R3-S6;
- 22.1
versions prior to
22.1R3-S5;
- 22.2
versions prior to
22.2R3-S3;
- 22.3
versions prior to
22.3R3-S2;
- 22.4 versions prior to 22,4R2-S2, 22.4R3;
- 23.2 versions prior to
23.2R1-S2, 23.2R2.
Affected Products
junosjuniperResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Frequently Asked Questions
Is CVE-2023-36851 in your stack?
O3 detects CVE-2023-36851 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.