An Out-of-Bounds Read vulnerability in
the routing protocol daemon (rpd) of
Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, logically adjacent BGP peer sending a specifically malformed BGP packet to cause rpd to crash and restart, resulting in a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.
This issue only affects systems configured in either of two ways:
* systems with BGP traceoptions enabled
* systems with BGP family traffic-engineering (BGP-LS)
configured
and can be exploited from a directly connected and configured BGP peer.
This issue affects iBGP and eBGP
with
any address family
configured, and both IPv4 and IPv6 are affected by this vulnerability.
This issue affects:
Junos OS:
from 21.4 before 21.4R3-S9,
Junos OS Evolved:
This issue does not affect versions of Junos OS prior to 21.3R1.
This issue does not affect versions of Junos OS Evolved prior to 21.3R1-EVO.
This is a similar, but different vulnerability than the issue reported as CVE-2024-39516.
| Software | From | Fixed in |
|---|---|---|
| juniper / junos | 21.4 | 21.4.x |
| juniper / junos | 21.4-r1 | 21.4-r1.x |
| juniper / junos | 21.4-r1-s1 | 21.4-r1-s1.x |
| juniper / junos | 21.4-r1-s2 | 21.4-r1-s2.x |
| juniper / junos | 21.4-r2 | 21.4-r2.x |
| juniper / junos | 21.4-r2-s1 | 21.4-r2-s1.x |
| juniper / junos | 21.4-r2-s2 | 21.4-r2-s2.x |
| juniper / junos | 21.4-r3 | 21.4-r3.x |
| juniper / junos | 21.4-r3-s1 | 21.4-r3-s1.x |
| juniper / junos | 21.4-r3-s2 | 21.4-r3-s2.x |
| juniper / junos | 21.4-r3-s3 | 21.4-r3-s3.x |
| juniper / junos | 21.4-r3-s4 | 21.4-r3-s4.x |
| juniper / junos | 21.4-r3-s5 | 21.4-r3-s5.x |
| juniper / junos | 21.4-r3-s6 | 21.4-r3-s6.x |
| juniper / junos | 21.4-r3-s7 | 21.4-r3-s7.x |
| juniper / junos | 21.4-r3-s8 | 21.4-r3-s8.x |
| juniper / junos | 22.2 | 22.2.x |
| juniper / junos | 22.2-r1 | 22.2-r1.x |
| juniper / junos | 22.2-r1-s1 | 22.2-r1-s1.x |
| juniper / junos | 22.2-r1-s2 | 22.2-r1-s2.x |
| juniper / junos | 22.2-r2 | 22.2-r2.x |
| juniper / junos | 22.2-r2-s1 | 22.2-r2-s1.x |
| juniper / junos | 22.2-r2-s2 | 22.2-r2-s2.x |
| juniper / junos | 22.2-r3 | 22.2-r3.x |
| juniper / junos | 22.2-r3-s1 | 22.2-r3-s1.x |
| juniper / junos | 22.2-r3-s2 | 22.2-r3-s2.x |
| juniper / junos | 22.2-r3-s3 | 22.2-r3-s3.x |
| juniper / junos | 22.2-r3-s4 | 22.2-r3-s4.x |
| juniper / junos | 22.3 | 22.3.x |
| juniper / junos | 22.3-r1 | 22.3-r1.x |
| juniper / junos | 22.3-r1-s1 | 22.3-r1-s1.x |
| juniper / junos | 22.3-r1-s2 | 22.3-r1-s2.x |
| juniper / junos | 22.3-r2 | 22.3-r2.x |
| juniper / junos | 22.3-r2-s1 | 22.3-r2-s1.x |
| juniper / junos | 22.3-r2-s2 | 22.3-r2-s2.x |
| juniper / junos | 22.3-r3 | 22.3-r3.x |
| juniper / junos | 22.3-r3-s1 | 22.3-r3-s1.x |
| juniper / junos | 22.3-r3-s2 | 22.3-r3-s2.x |
| juniper / junos | 22.3-r3-s3 | 22.3-r3-s3.x |
| juniper / junos | 22.4 | 22.4.x |
| juniper / junos | 22.4-r1 | 22.4-r1.x |
| juniper / junos | 22.4-r1-s1 | 22.4-r1-s1.x |
| juniper / junos | 22.4-r1-s2 | 22.4-r1-s2.x |
| juniper / junos | 22.4-r2 | 22.4-r2.x |
| juniper / junos | 22.4-r2-s1 | 22.4-r2-s1.x |
| juniper / junos | 22.4-r2-s2 | 22.4-r2-s2.x |
| juniper / junos | 22.4-r3 | 22.4-r3.x |
| juniper / junos | 22.4-r3-s1 | 22.4-r3-s1.x |
| juniper / junos | 22.4-r3-s2 | 22.4-r3-s2.x |
| juniper / junos | 22.4-r3-s3 | 22.4-r3-s3.x |
| juniper / junos | 22.4-r3-s4 | 22.4-r3-s4.x |
| juniper / junos | 23.2 | 23.2.x |
| juniper / junos | 23.2-r1 | 23.2-r1.x |
| juniper / junos | 23.2-r1-s1 | 23.2-r1-s1.x |
| juniper / junos | 23.2-r1-s2 | 23.2-r1-s2.x |
| juniper / junos | 23.2-r2 | 23.2-r2.x |
| juniper / junos | 23.2-r2-s1 | 23.2-r2-s1.x |
| juniper / junos | 23.2-r2-s2 | 23.2-r2-s2.x |
| juniper / junos | 23.4 | 23.4.x |
| juniper / junos | 23.4-r1 | 23.4-r1.x |
| juniper / junos | 23.4-r1-s1 | 23.4-r1-s1.x |
| juniper / junos | 23.4-r1-s2 | 23.4-r1-s2.x |
| juniper / junos | 23.4-r2 | 23.4-r2.x |
| juniper / junos | 23.4-r2-s1 | 23.4-r2-s1.x |
| juniper / junos | 23.4-r2-s2 | 23.4-r2-s2.x |
| juniper / junos | 24.2 | 24.2.x |
| juniper / junos | 24.2-r1 | 24.2-r1.x |
| juniper / junos | 24.2-r1-s1 | 24.2-r1-s1.x |
| juniper / junos | 24.2-r2 | 24.2-r2.x |
| juniper / junos_os_evolved | 21.4 | 21.4.x |
| juniper / junos_os_evolved | 21.4-r1 | 21.4-r1.x |
| juniper / junos_os_evolved | 21.4-r1-s1 | 21.4-r1-s1.x |
| juniper / junos_os_evolved | 21.4-r1-s2 | 21.4-r1-s2.x |
| juniper / junos_os_evolved | 21.4-r2 | 21.4-r2.x |
| juniper / junos_os_evolved | 21.4-r2-s1 | 21.4-r2-s1.x |
| juniper / junos_os_evolved | 21.4-r2-s2 | 21.4-r2-s2.x |
| juniper / junos_os_evolved | 21.4-r3 | 21.4-r3.x |
| juniper / junos_os_evolved | 21.4-r3-s1 | 21.4-r3-s1.x |
| juniper / junos_os_evolved | 21.4-r3-s2 | 21.4-r3-s2.x |
| juniper / junos_os_evolved | 21.4-r3-s3 | 21.4-r3-s3.x |
| juniper / junos_os_evolved | 21.4-r3-s4 | 21.4-r3-s4.x |
| juniper / junos_os_evolved | 21.4-r3-s5 | 21.4-r3-s5.x |
| juniper / junos_os_evolved | 21.4-r3-s6 | 21.4-r3-s6.x |
| juniper / junos_os_evolved | 21.4-r3-s7 | 21.4-r3-s7.x |
| juniper / junos_os_evolved | 21.4-r3-s8 | 21.4-r3-s8.x |
| juniper / junos_os_evolved | 22.2 | 22.2.x |
| juniper / junos_os_evolved | 22.2-r1 | 22.2-r1.x |
| juniper / junos_os_evolved | 22.2-r1-s1 | 22.2-r1-s1.x |
| juniper / junos_os_evolved | 22.2-r1-s2 | 22.2-r1-s2.x |
| juniper / junos_os_evolved | 22.2-r2 | 22.2-r2.x |
| juniper / junos_os_evolved | 22.2-r2-s1 | 22.2-r2-s1.x |
| juniper / junos_os_evolved | 22.2-r2-s2 | 22.2-r2-s2.x |
| juniper / junos_os_evolved | 22.2-r3 | 22.2-r3.x |
| juniper / junos_os_evolved | 22.2-r3-s1 | 22.2-r3-s1.x |
| juniper / junos_os_evolved | 22.2-r3-s2 | 22.2-r3-s2.x |
| juniper / junos_os_evolved | 22.2-r3-s3 | 22.2-r3-s3.x |
| juniper / junos_os_evolved | 22.2-r3-s4 | 22.2-r3-s4.x |
| juniper / junos_os_evolved | 22.3 | 22.3.x |
| juniper / junos_os_evolved | 22.3-r1 | 22.3-r1.x |
| juniper / junos_os_evolved | 22.3-r1-s1 | 22.3-r1-s1.x |
| juniper / junos_os_evolved | 22.3-r1-s2 | 22.3-r1-s2.x |
| juniper / junos_os_evolved | 22.3-r2 | 22.3-r2.x |
| juniper / junos_os_evolved | 22.3-r2-s1 | 22.3-r2-s1.x |
| juniper / junos_os_evolved | 22.3-r2-s2 | 22.3-r2-s2.x |
| juniper / junos_os_evolved | 22.3-r3 | 22.3-r3.x |
| juniper / junos_os_evolved | 22.3-r3-s1 | 22.3-r3-s1.x |
| juniper / junos_os_evolved | 22.3-r3-s2 | 22.3-r3-s2.x |
| juniper / junos_os_evolved | 22.3-r3-s3 | 22.3-r3-s3.x |
| juniper / junos_os_evolved | 22.4 | 22.4.x |
| juniper / junos_os_evolved | 22.4-r1 | 22.4-r1.x |
| juniper / junos_os_evolved | 22.4-r1-s1 | 22.4-r1-s1.x |
| juniper / junos_os_evolved | 22.4-r1-s2 | 22.4-r1-s2.x |
| juniper / junos_os_evolved | 22.4-r2 | 22.4-r2.x |
| juniper / junos_os_evolved | 22.4-r2-s1 | 22.4-r2-s1.x |
| juniper / junos_os_evolved | 22.4-r2-s2 | 22.4-r2-s2.x |
| juniper / junos_os_evolved | 22.4-r3 | 22.4-r3.x |
| juniper / junos_os_evolved | 22.4-r3-s1 | 22.4-r3-s1.x |
| juniper / junos_os_evolved | 22.4-r3-s2 | 22.4-r3-s2.x |
| juniper / junos_os_evolved | 22.4-r3-s3 | 22.4-r3-s3.x |
| juniper / junos_os_evolved | 22.4-r3-s4 | 22.4-r3-s4.x |
| juniper / junos_os_evolved | 23.2 | 23.2.x |
| juniper / junos_os_evolved | 23.2-r1 | 23.2-r1.x |
| juniper / junos_os_evolved | 23.2-r1-s1 | 23.2-r1-s1.x |
| juniper / junos_os_evolved | 23.2-r1-s2 | 23.2-r1-s2.x |
| juniper / junos_os_evolved | 23.2-r2 | 23.2-r2.x |
| juniper / junos_os_evolved | 23.2-r2-s1 | 23.2-r2-s1.x |
| juniper / junos_os_evolved | 23.2-r2-s2 | 23.2-r2-s2.x |
| juniper / junos_os_evolved | 23.4 | 23.4.x |
| juniper / junos_os_evolved | 23.4-r1 | 23.4-r1.x |
| juniper / junos_os_evolved | 23.4-r1-s1 | 23.4-r1-s1.x |
| juniper / junos_os_evolved | 23.4-r1-s2 | 23.4-r1-s2.x |
| juniper / junos_os_evolved | 23.4-r2 | 23.4-r2.x |
| juniper / junos_os_evolved | 23.4-r2-s1 | 23.4-r2-s1.x |
| juniper / junos_os_evolved | 24.2 | 24.2.x |
| juniper / junos_os_evolved | 24.2-r1 | 24.2-r1.x |
| juniper / junos_os_evolved | 24.2-r2 | 24.2-r2.x |
A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.
CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.
A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.
Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.
Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.
SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.