CVE-2020-3444 Cisco SD-WAN Software Packet Filtering Bypass Vulnerability
Unauthenticated remote attackers can bypass L3 and L4 traffic filters by sending crafted TCP packets, allowing arbitrary packet injection into the network.
- 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-2020-3444?
CVE-2020-3444 is a medium-severity vulnerability in Cisco Ios Xe, published on 6 Nov 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the packet filtering features of Cisco SD-WAN Software could allow an unauthenticated, remote attacker to bypass L3 and L4 traffic filters. The vulnerability is due to improper traffic filtering conditions on an affected device. An attacker could exploit this vulnerability by crafting a malicious TCP packet with specific characteristics and sending it to a targeted device. A successful exploit could allow the attacker to bypass the L3 and L4 traffic filters and inject an arbitrary packet into the network.
Weakness: CWE-20
Which versions are affected by CVE-2020-3444?
It affects 1 product.
Products include Cisco Ios Xe.
How do I fix CVE-2020-3444?
No fix has been published for CVE-2020-3444 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-3444 being exploited?
There is no known exploitation of CVE-2020-3444 in the wild and no public exploit code.
Other vulnerabilities in Cisco Ios Xe
- CVE-2023-20198 Cisco IOS XE Web UI Privilege Escalation
- CVE-2018-0151 Cisco IOS Software and Cisco IOS XE Software Quality of Service Remote Code Execution
- CVE-2023-20273 Cisco IOS XE Web UI Command Injection
- CVE-2025-20188 Hardcoded credentials in Cisco IOS XE Software
- CVE-2021-34770 Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Remote Code Execution Vulnerability
Sources
Also known as GHSA-p5g6-5mhj-fpg5.