vciy

CVE-2025-30334

INDEX BUILT · 2026-09-20

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OpenBSD wg(4) kernel crash

CVE-2025-303344 of 4 sources documented this
21

rank 21 = 0 + 16 + 0 + 5 + 0

rank@v1 · backlog

Someone is already using it

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

EPSS 0.00430  ·  without this subject the record ranks 21

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 6.5, from the CNA  ·  without this subject the record ranks 5

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

3 products in the CPE ranges  ·  without this subject the record ranks 16

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$13,100over 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

$13,100 = $4.99M incident cost x 0.6121449559255632 exposure x 0.0043 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

0.0043EPSSNOT IN KEVas of 2026-09-20
Severity6.5 MEDIUMreceipt
Harmpartial impactreceipt
Exploitationnone in held sources
Defensefix version namedreceipt
Movementrisenreceipt
PLATEAU10Minimal movement since 2025-03-21, 513 days at 0.00, as of 2026-08-16. 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

Running OpenBSD? Check your version

A deterministic range check against the ranges this record publishes. It tells you where a version sits in the record, not whether your deployment is exploitable. No account needed.

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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 · low privileges required · no user interaction · low attack complexityreceipt
ImpactComplete availability lossreceipt
Scored fromCVSS v3.1 · the CNA's vectorreceipt
Weakness classCWE-131 Incorrect Calculation of Buffer Sizereceipt
Published consequencesCWE-131: Integrity, Availability, Confidentiality: DoS: Crash, Exit, or Restart, Execute Unauthorized Code or Commands, Read Memory, Modify Memory[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

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

Fixed in7.6 errata 006; 7.6 errata 008; 7.5 errata 015receipt
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 CNA6.5 MEDIUMreceipt
Exploit probability0.0043 · top 63% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned bycisa-cgreceipt
Recorded changes28 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productOpenBSDreceipt
Published rangesopenbsd < 7.5; openbsd 7.5; openbsd 7.6receipt
Fixed in7.6 errata 006; 7.6 errata 008; 7.5 errata 015receipt

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.

Did this affect your environment?Answering needs an account.

Attack path

Network requestrequires low privilegesOpenBSDCWE-131 weaknessAvailability lossA:Hexploits CWE-131data compromise

What it is stated by the CNA

In OpenBSD 7.6 before errata 006 and OpenBSD 7.5 before errata 015, traffic sent over wg(4) could result in kernel crash. receipt

NVD's analysis a second authority

weakness
CWE-131
affected versions
openbsd < 7.5; openbsd 7.5; openbsd 7.6
also scored by
7.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X · 6.5…

check it yourself ftp.openbsd.org ftp.openbsd.org github.com receipt

Movement the material steps

21 Mar 20250.00038
15 Jun 20260.00374 · scoring model v2026.06.15
16 Aug 20260.0043
Show all 28 observations
21 Mar 20250.00038
22 Mar 20250.00037
23 Mar 20250.0004
26 Mar 20250.00044
29 Mar 20250.00037
30 Mar 20250.00044
21 Apr 20250.00051
27 May 20250.00059
20 Jul 20250.00082
16 Aug 20250.00059
17 Aug 20250.00066
28 Aug 20250.00078
6 Sep 20250.00058
14 Oct 20250.00062
24 Oct 20250.00069
18 Nov 20250.0013
21 Nov 20250.00069
23 Nov 20250.00076
4 Dec 20250.00086
14 Dec 20250.00096
4 Jan 20260.00104
14 Jan 20260.00115
28 Apr 20260.00297
29 Apr 20260.00219
15 Jun 20260.00374
21 Jun 20260.00402
24 Jul 20260.00412
16 Aug 20260.0043

28 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 0.0043Published2025-03-20Index as of2026-08-16

The record had been public for 1 year, 4 months when this index was last written.

Published 2025-03-20 receipt · Index as of 2026-08-16 derived

Siblings and hubs

Records related to this one

Its defect family

openbsd

Of the 3 records in this family, this is the only one holding a stated fix version: 7.6 errata 006; 7.6 errata 008; 7.5 errata 015.

Grouped by shared product and weakness, not by shared vulnerability. Each record's own state is on its own page.

Family membership: held values

This record is one of a group, and the group's page describes all of them. This page is kept and dated, and the defect family's own page is the one we offer for indexing: the whole group.

Browse the index from here

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What usually comes next

Everything above needs no account. What is below is work: assembling it, scoping it to your estate, watching it, and handing it to someone else.

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