CVE-2022-23094Public exploitNetwork attack vector

Daemon crash via missing-state logger dereference

Published Jan 15, 2022 · Updated Aug 3, 2024

NULL pointer dereference in Libreswan 4.2 through 4.5 allows remote attackers to crash and restart the pluto daemon via malformed IKEv1 packets. The IKEv1 packet-processing path logs malformed payloads through st->st_logger even when early rejection leaves the state object null. Main Mode or Aggressive Mode traffic can reach the flaw without authentication, and repeated packets can keep the IKE service unavailable.

CVSS severity7.5
High
EPSS probability2.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Libreswan 4.2 through 4.5 allows remote attackers to crash and restart the pluto daemon via malformed IKEv1 packets. The IKEv1 packet-processing path logs malformed payloads through st->st_logger even when early rejection leaves the state object null. Main Mode or Aggressive Mode traffic can reach the flaw without authentication, and repeated packets can keep the IKE service unavailable.

The record

CVE
CVE-2022-23094
Published
Jan 15, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.0NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:P

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 exploitPublished

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

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

Technologies

Your stack

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Your stack

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