Buffer overflow in Juniper Junos
CVE-2024-21591
An Out-of-bounds Write vulnerability in J-Web of Juniper Networks Junos OS on SRX Series and EX Series allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS), or Remote Code Execution (RCE) and obtain root pr…
Vulnerability class: Buffer Overflow
EPSS: 0.177 (96.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Juniper Junos — versions 20.4, 21.2, 21.3
- Juniper Networks Junos Os — versions 0, 21.2, 21.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- sirt@juniper.net (vendor-advisory, Vendor Advisory)
- sirt@juniper.net (technical-description, Third Party Advisory)
- sirt@juniper.net (Exploit, Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2024-21591?
- CVE-2024-21591 is a critical-severity vulnerability in Juniper Junos, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2024-01-12.
- How severe is CVE-2024-21591?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2024-21591 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.