CVE-2026-63451· NVD / CVE Program· CNA GitHub_M

Suricata detect: frame rules without content and with transform can cause heap buffer overflow during rule load

Noroxi assessment

Priority: Monitor (action score 22/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.14% (FIRST EPSS).
Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
Fixed version: OISF suricata 8.0.6.
Severity is disputed: the assigning authority (CNA) scores it 3.3, NVD 5.5.
Mentioned 1 time in Turkish national cyber security advisories (siberguvenlik.gov.tr).

Low priority for now. Upgrade to OISF suricata 8.0.6 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, a locally supplied detection rule that combines frame inspection without content and a transformed match without content can make src/detect-engine-prefilter.c select multiple non-prefilter frame engines while preparing signatures for non-prefilter inspection. Loading the crafted rule, including in test mode, can trigger a heap buffer overflow and crash Suricata; network traffic alone cannot reach the flaw. This issue is fixed in version 8.0.6.

MediumCVSS 5.5 · v3.1—No exploit Fix available

EUVD-2026-83389

Published: Sep 18, 2026
Updated: Sep 28, 2026
EPSS: 0.1% · 3th percentile
CWE: CWE-122

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 22 / 40 · 5.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.1%

CISA SSVC decision

Exploitation: none
Automatable: no
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD: 5.5
CNA · GitHub_M: 3.3; 2.2 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

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Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
oisf	suricata	cpe:2.3:a:oisf:suricata

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

oisf suricata8.0.0 and later · before 8.0.6

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

OISF suricata
- >= 8.0.0, < 8.0.6affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Debian:13	suricata	from 0	—
Debian:14	suricata	before 1:8.0.6-1	1:8.0.6-1

Same product

oisf: all records

Other highest-scoring records for the same primary product.

CVE-2026-22262Suricata datasets: stack overflow when saving a set
39Monitor
CVE-2023-35853In Suricata before 6.0.13, an adversary who controls an external source of Lua rules may be able to execute Lua code.
39Monitor
CVE-2021-37592Suricata before 5.0.8 and 6.x before 6.0.4 allows TCP evasion via a client with a crafted TCP/IP stack that can send a certain sequence of s
39Monitor

Published before and after this one in the same product

← EarlierCVE-2026-63449Sep 18, 2026 · Suricata sip: large SIP message bodies can evade detection with frame keyword
21Monitor
← EarlierCVE-2026-63450Sep 18, 2026 · Suricata ftp: RETR/STOR before PORT/PASV can disable further IDS app-layer detection
21Monitor
Later →CVE-2026-63452Sep 18, 2026 · Suricata http1: repeated brotli compression bombs can cause excessive CPU consumption
30Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
OISF suricata	8.0.6 · description	Vendor (CNA)
debian:suricata	1:8.0.6-1 · Debian:14	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2025-64330296 days apartSuricata is vulnerable to a heap buffer overflow on verdict
30Monitor
CVE-2026-572260 days apartSuricata swf: heap buffer overflow in SWF decompression depth handling
23Monitor
CVE-2026-457618 days apartSuricata detect: case-insensitive frame handling can cause heap buffer overflow during rule load
13Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

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Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).