CVE-2022-20694

What it is

A vulnerability in the implementation of the Resource Public Key Infrastructure (RPKI) feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause the Border Gateway Protocol (BGP) process to crash, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of a specific RPKI to Router (RTR) Protocol packet header. An attacker could exploit this vulnerability by compromising the RPKI validator server and sending a specifically crafted RTR packet to an affected device. Alternatively, the attacker could use man-in-the-middle techniques to impersonate the RPKI validator server and send a crafted RTR response packet over the established RTR TCP connection to the affected device. A successful exploit could allow the attacker to cause a DoS condition because the BGP process could constantly restart and BGP routing could become unstable.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of service disruption.

Exploit odds

1.2% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2022-04-15 15:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 04:24 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 1.2% in the next 30 days (EPSS).
• Severity: 6.8 MEDIUM (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2022-04-15 15:15 UTC

Last modified

2026-06-17 04:24 UTC

Exploit probability

1.2% · EPSS, next 30 days

Weakness

CWE-617

Record status

Modified

Affected

• Cisco iOS Xe 3.7.0bs
• Cisco iOS Xe 3.7.0s
• Cisco iOS Xe 3.7.0xas
• Cisco iOS Xe 3.7.0xbs
• Cisco iOS Xe 3.7.1as
• Cisco iOS Xe 3.7.1s
• Cisco iOS Xe 3.7.2s
• Cisco iOS Xe 3.7.2ts

Attack profile CVSS 3.1 · 6.8

Attack vector

Network

Complexity

High

Privileges needed

None

User interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2022-20694.md and follow it. Check whether this project is affected by CVE-2022-20694. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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