CVE-2024-55626

Service interruption via truncated BPF file length

Published Jan 6, 2025 · Updated Nov 3, 2025

Integer overflow in Suricata before 7.0.8 allows local users to interrupt startup by supplying an oversized BPF filter file. SetBpfStringFromFile stores the file size plus one in a 32-bit bpf_len, so truncation underallocates bpf_filter before the file is read into it. Exploitation requires an operator to launch Suricata with the attacker-controlled file through -F; the resulting overflow can crash the process.

CVSS severity3.3
Low
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in Suricata before 7.0.8 allows local users to interrupt startup by supplying an oversized BPF filter file. SetBpfStringFromFile stores the file size plus one in a 32-bit bpf_len, so truncation underallocates bpf_filter before the file is read into it. Exploitation requires an operator to launch Suricata with the attacker-controlled file through -F; the resulting overflow can crash the process.

The record

CVE
CVE-2024-55626
Published
Jan 6, 2025
Updated
Nov 3, 2025
Vendor
Open Information Security Foundation
Product
Suricata
Classifications
CWE-680, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 3, 2025Record 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=< 7.0.8

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Open Information Security Foundation · Suricataversion=< 7.0.8

Published CVSS scores

3.3GitHub, Inc.CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/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)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-680Integer Overflow to Buffer Overflow
T1204.002User Execution: Malicious File

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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