---
title: "CVE-2026-45769: Suricata - Denial of Service"
description: "Suricata < 7.0.16 and < 8.0.5 contain a denial of service caused by unbounded growth of IKEv2 parser state when storing client transforms, letting attackers cause excessive memory consumption via crafted UDP traffic, exploit requires repeated crafted UDP packets."
url: https://panop.io/threat-heartbeat/CVE-2026-45769/
---

# CVE-2026-45769 Suricata - Denial of Service

Suricata < 7.0.16 and < 8.0.5 contain a denial of service caused by unbounded growth of IKEv2 parser state when storing client transforms, letting attackers cause excessive memory consumption via crafted UDP traffic, exploit requires repeated crafted UDP packets.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

1.79% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-45769)

## Details

Type

Denial of Service

Impact

Denial Of Service

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Published

10 September 2026

Updated

15 October 2026

Weakness

[CWE-400](https://cwe.mitre.org/data/definitions/400.html)

## Vendor fix

Upgrade to versions 7.0.16 or 8.0.5 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-45769](https://nvd.nist.gov/vuln/detail/CVE-2026-45769)
- [https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315](https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315)
- [https://github.com/OISF/suricata/security/advisories/GHSA-hg2g-r464-5593](https://github.com/OISF/suricata/security/advisories/GHSA-hg2g-r464-5593)
- [https://redmine.openinfosecfoundation.org/issues/8415](https://redmine.openinfosecfoundation.org/issues/8415)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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