How to check if you are exposed to CVE-2023-36844
- Find every Juniper Junos OS system you or your clients run, including ones exposed to the internet. Those come first: CISA only lists flaws attackers are already using.
- Compare each version with the fixed versions in the vendor advisory below. Where no fix exists yet, apply the vendor’s mitigation or take the system off the internet.
- Run a credentialed vulnerability scan to catch the systems you missed, then check that the next scan no longer reports CVE-2023-36844.
US federal agencies had to fix this by 2023-11-17. Everyone else should treat that deadline as a guide: if it has passed, this is overdue.
Timeline
- · Added to CISA's Known Exploited Vulnerabilities catalog
- · Fix-by date for US federal agencies, passed 1,080 days ago
Vendor advisories and fixes
Weakness type
More exploited Juniper vulnerabilities
CISA lists 8 exploited Juniper vulnerabilities. The closest matches:
- CVE-2025-21590Juniper Junos OS Improper Isolation or Compartmentalization VulnerabilityAdded 2025-03-13
- CVE-2023-36851Juniper Junos OS SRX Series Missing Authentication for Critical Function VulnerabilityAdded 2023-11-13
- CVE-2023-36847Juniper Junos OS EX Series Missing Authentication for Critical Function VulnerabilityAdded 2023-11-13
- CVE-2023-36846Juniper Junos OS SRX Series Missing Authentication for Critical Function VulnerabilityAdded 2023-11-13
- CVE-2023-36845Juniper Junos OS EX Series and SRX Series PHP External Variable Modification VulnerabilityAdded 2023-11-13
- CVE-2020-1631Juniper Junos OS Path Traversal VulnerabilityAdded 2022-03-25
- CVE-2015-7755Juniper ScreenOS Improper Authentication VulnerabilityAdded 2025-10-02
Keep going
Sources: CISA Known Exploited Vulnerabilities catalog (version 2026.10.30); EPSS data from FIRST.org; CVSS and descriptions from the NIST National Vulnerability Database. Checked 2026-11-01. This product uses the NVD API but is not endorsed or certified by the NVD.