CVE-2026-45747Network attack vector

Remote engine crash via NULL certificate dereference

Published Sep 10, 2026 · Updated Sep 10, 2026

NULL pointer dereference in Suricata before 7.0.16 allows remote attackers to crash the engine with crafted TLS traffic. TlsGetCertInfo passes absent certificate fields to Lua without checking for NULL values before dereferencing them. Exploitation requires an enabled Lua script that calls this helper on untrusted TLS traffic, and the resulting process crash interrupts network monitoring.

CVSS severity7.5
High
EPSS probability0.34%
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 Suricata before 7.0.16 allows remote attackers to crash the engine with crafted TLS traffic. TlsGetCertInfo passes absent certificate fields to Lua without checking for NULL values before dereferencing them. Exploitation requires an enabled Lua script that calls this helper on untrusted TLS traffic, and the resulting process crash interrupts network monitoring.

The record

CVE
CVE-2026-45747
Published
Sep 10, 2026
Updated
Sep 10, 2026
Vendor
Open Information Security Foundation
Product
Suricata
Classifications
CWE-476, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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

  1. Affected versionversion=< 7.0.16

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Open Information Security Foundation · Suricataversion=< 7.0.16

Published CVSS scores

7.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

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

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

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Your stack

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