CVE-2022-22247 Junos OS Evolved: Kernel processing of unvalidated TCP segments could lead to a Denial of Service (DoS)
A network-based attacker can cause a kernel panic and sustained denial of service by sending crafted TCP segments to Junos OS Evolved devices.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-22247?
CVE-2022-22247 is a high-severity denial of service vulnerability in Juniper Junos Os Evolved, published on 18 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An Improper Input Validation vulnerability in ingress TCP segment processing of Juniper Networks Junos OS Evolved allows a network-based unauthenticated attacker to send a crafted TCP segment to the device, triggering a kernel panic, leading to a Denial of Service (DoS) condition. Continued receipt and processing of this TCP segment could create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks Junos OS Evolved: 21.3 versions prior to 21.3R3-EVO; 21.4 versions prior to 21.4R2-EVO; 22.1 versions prior to 22.1R2-EVO. This issue does not affect Juniper Networks Junos OS Evolved versions prior to 21.3R1-EVO.
Weakness: CWE-20
Which versions are affected by CVE-2022-22247?
It affects 1 product.
Products include Juniper Junos Os Evolved.
How do I fix CVE-2022-22247?
No fix has been published for CVE-2022-22247 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2022-22247 being exploited?
There is no known exploitation of CVE-2022-22247 in the wild and no public exploit code.
Other vulnerabilities in Juniper Junos Os Evolved
- CVE-2026-21902 Junos OS Evolved: PTX Series: A vulnerability allows a unauthenticated, network-based attacker to execute code as root
- CVE-2023-28983 Junos OS Evolved: Shell Injection vulnerability in the gNOI server
- CVE-2025-21599 Denial of service in Junos OS Evolved
- CVE-2024-47502 Junos OS Evolved: TCP session state is not always cleared on the Routing Engine leading to DoS
- CVE-2024-39531 Junos OS Evolved: ACX 7000 Series: Protocol specific DDoS configuration affects other protocols
Sources
Also known as GHSA-f64r-j9jf-68xv.