vciy

CVE-2024-55629

INDEX BUILT · 2026-09-20

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Suricata generic detection bypass using TCP urgent support

CVE-2024-556294 of 4 sources documented this
21

rank 21 = 0 + 19 + 0 + 2 + 0

rank@v1 · backlog

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.00543  ·  without this subject the record ranks 21

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 7.5, from NVD  ·  without this subject the record ranks 2

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

no persisting rise in 365 days  ·  without this subject the record ranks 21

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 19

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 21

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$16,600over the next 30 days, if this record is yours
Movementno material movementthe record holds only daily drift and scoring model releases
Basisassumeda published average, not your estate

$16,600 = $4.99M incident cost x 0.6121449559255632 exposure x 0.00543 likelihood

udv@v1 · unaudited · wrong for you until you say what you run

$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.

Hindsight · the state

0.00543EPSSNOT IN KEVas of 2026-09-20
Severity7.5 HIGHreceipt
Harmunauthenticated · networkreceipt
Exploitationnone in held sources
Defenseunaffected versions publishedreceipt
Movementrisenreceipt
PLATEAU10Minimal movement since 2025-01-07, 571 days at 0.01, as of 2026-08-01. arc-rules@v1

Foresight · where to check next

No weakness class or product neighbourhood is held for this record, so this index cannot name anywhere to check next. That is an absence in the record, not a finding about the software.

Color is a claim, not decoration:the hostile worldthe defenseno signal

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AcceptDeferPatch by…Not affectedMitigated

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Harm, if it fires from the vector and the weakness

Written for the ticket you're about to file.

Reachnetwork-reachable · no privileges required · no user interaction · low attack complexityreceipt
ImpactComplete integrity lossreceipt
Scored fromCVSS v3.1 · the CNA's vectorreceipt
Weakness classCWE-437 Incomplete Model of Endpoint Featuresreceipt
Published consequencesCWE-437: Integrity, Other: Unexpected State, Varies by Context[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

First unaffected version, by branchsuricata 7.0.8receipt
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.

Exploit Status & Known PoCs a ladder, not a score

Current rung: Nothing observed in held sources.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA7.5 HIGHreceipt
CVSS, NVD7.5 HIGHreceipt
Exploit probability0.00543 · top 55% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byGitHub_Mreceipt
Recorded changes25 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productOISF suricatareceipt
Published rangesoisf suricata < 7.0.8receipt

A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.

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Attack path

Unauthenticated network requestno credentials, no interactionOISF suricataCWE-437 weaknessIntegrity lossI:Hexploits CWE-437data compromise

What it is stated by the CNA

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 7.0.8, TCP streams with TCP urgent data (out of band data) can lead to Suricata analyzing data differently than the applications at the TCP endpoints, leading to possible evasions. Suricata 7.0.8 includes options to allow users to configure how to handle TCP urgent data. In IPS mode, you can use a rule such as drop tcp any any -> any any (sid:1; tcp.flags:U*;) to drop all the packets with urgent flag set. receipt

NVD's analysis a second authority

severity
7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
weakness
CWE-437; CWE-436
affected versions
oisf suricata < 7.0.8
also scored by
[email protected] 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

check it yourself github.com github.com github.com redmine.openinfosecfoundation.org receipt

Movement the material steps

7 Jan 20250.00045
17 Mar 20250.00061 · scoring model v2025.03.14
15 Jun 20260.00524 · scoring model v2026.06.15
1 Aug 20260.00543
Show all 25 observations
7 Jan 20250.00045
17 Mar 20250.00061
19 Mar 20250.00062
29 Mar 20250.00085
30 Mar 20250.00062
1 Apr 20250.0006
8 May 20250.00078
10 May 20250.00056
5 Jun 20250.00063
16 Jun 20250.00079
2 Aug 20250.00091
12 Aug 20250.00101
11 Sep 20250.0011
22 Sep 20250.00141
2 Oct 20250.00158
23 Oct 20250.00171
2 Nov 20250.00201
18 Nov 20250.00277
21 Nov 20250.00201
20 Jan 20260.003
14 Feb 20260.0065
12 May 20260.00525
15 Jun 20260.00524
9 Jul 20260.00533
1 Aug 20260.00543

25 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt

The full biography

EPSS 0.00543Published2025-01-06Index as of2026-08-01

The record had been public for 1 year, 6 months when this index was last written.

Published 2025-01-06 receipt · Index as of 2026-08-01 derived

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