Is CVE-2026-45768 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-45768 being exploited in the wild.

How severe is CVE-2026-45768?

High severity, with a CVSS score of 7.5, published 10 September 2026.

Is there a fix for CVE-2026-45768?

A patch was published on 2026-05-19: Fixed in Suricata 8.0.5 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-45768 attacked?

It is attacked over the network.

Am I affected by CVE-2026-45768?

Check whether you run OISF Suricata at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-45768: Suricata unbounded LDAP response buffering denial of service

CVE-2026-45768 · Severity: high · CVSS 7.5 · Published 2026-09-10

Suricata is a network security monitoring and intrusion detection system used to inspect traffic and protect networks. A vulnerability in LDAP protocol handling allows an attacker to send crafted traffic that forces Suricata to store unlimited responses in memory, exhausting resources and causing the service to stop functioning. This results in a denial of service where network monitoring is disabled.

Technologies: OISF Suricata. Vendors: OISF.

Quick answers

Is CVE-2026-45768 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-45768 being exploited in the wild.
How severe is CVE-2026-45768?: High severity, with a CVSS score of 7.5, published 10 September 2026.
Which products and versions are affected?: OISF Suricata 8.0.0 to 8.0.4.
Is there a fix for CVE-2026-45768?: A patch was published on 2026-05-19: Fixed in Suricata 8.0.5 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-45768 attacked?: It is attacked over the network.
Am I affected by CVE-2026-45768?: Check whether you run OISF Suricata at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is an uncontrolled resource consumption (CWE-400, CWE-770) in Suricata's LDAP application-layer protocol parser. The LDAP transaction state mechanism fails to impose limits on the number of responses buffered per transaction. Because LDAP can be transported over UDP, an attacker on the network can send crafted LDAP traffic to trigger unbounded memory allocation. No authentication or user interaction is required; the attack is network-accessible. Exploitation results in memory exhaustion and denial of service of the Suricata monitoring engine. The fix is available in version 8.0.5; affected versions are 8.0.0 through 8.0.4. Workarounds include disabling LDAP parsing or implementing response count limits via detection rules.

Affected products

OISF Suricata 8.0.0 to 8.0.4

Timeline

2026-09-10: disclosed
2026-05-19: patched: Fixed in Suricata 8.0.5

References

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