CVE-2022-22237Network attack vector

Unauthorized routing sessions via TCP-AO authentication bypass

Published Oct 18, 2022 · Updated May 10, 2025

Improper authentication in the Junos OS kernel allows remote attackers to establish unauthorized BGP or LDP sessions over TCP-AO. The TCP-AO processing path accepts a peer that sends no authentication even when that peer is locally configured to require authentication. The attacker must reach a configured BGP or LDP peer; a successful session can admit untrusted routing or label-distribution traffic, affecting confidentiality or integrity.

CVSS severity6.5
Medium
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper authentication in the Junos OS kernel allows remote attackers to establish unauthorized BGP or LDP sessions over TCP-AO. The TCP-AO processing path accepts a peer that sends no authentication even when that peer is locally configured to require authentication. The attacker must reach a configured BGP or LDP peer; a successful session can admit untrusted routing or label-distribution traffic, affecting confidentiality or integrity.

The record

CVE
CVE-2022-22237
Published
Oct 18, 2022
Updated
May 10, 2025
Vendor
Juniper Networks
Product
Junos OS
Classifications
CWE-287, T1210
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 18, 2022CVE publishedPublication date reported by the CVE source.
  2. May 10, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=21.2 <21.2R3-S1
  2. Affected versionversion=21.3 <21.3R2-S2, 21.3R3
  3. Affected versionversion=21.4 <21.4R2-S1, 21.4R3
  4. Affected versionversion=22.1 <22.1R1-S1, 22.1R2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Juniper Networks · Junos OSversion=21.2 <21.2R3-S1; version=21.3 <21.3R2-S2, 21.3R3; version=21.4 <21.4R2-S1, 21.4R3; version=22.1 <22.1R1-S1, 22.1R2

Published CVSS scores

6.5Juniper Networks, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo