CVE-2025-64331Network attack vector

Service crash via stack-sized printable body buffer

Published Nov 26, 2025 · Updated Nov 28, 2025

Stack-based buffer overflow in Suricata before 7.0.13 and 8.0.0 through 8.0.1 allows remote attackers to crash the engine. The EVE HTTP BodyPrintableBuffer function allocates a printable buffer on the thread stack sized from an untrusted logged response body before copying that body into it. The crash requires an increased HTTP response-body limit and enabled http-body-printable logging, which is disabled by default; no data disclosure or modification is reported.

CVSS severity7.5
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Suricata before 7.0.13 and 8.0.0 through 8.0.1 allows remote attackers to crash the engine. The EVE HTTP BodyPrintableBuffer function allocates a printable buffer on the thread stack sized from an untrusted logged response body before copying that body into it. The crash requires an increased HTTP response-body limit and enabled http-body-printable logging, which is disabled by default; no data disclosure or modification is reported.

The record

CVE
CVE-2025-64331
Published
Nov 26, 2025
Updated
Nov 28, 2025
Vendor
Open Information Security Foundation
Product
Suricata
Classifications
CWE-121, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 28, 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=< 7.0.13
  2. Affected versionversion=< 8.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Open Information Security Foundation · Suricataversion=< 7.0.13; version=< 8.0.2

Published CVSS scores

7.5GitHub, Inc.CVSS: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-121Stack-based Buffer Overflow
T1499.004Application or System Exploitation

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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