vciy

CVE-2023-25078

INDEX BUILT · 2026-09-20

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DoS due to heap overflow

CVE-2023-250784 of 4 sources documented this
28

rank 28 = 0 + 19 + 0 + 9 + 0

rank@v1 · scheduled

Someone is already using it

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

EPSS 0.00652  ·  without this subject the record ranks 28

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 9

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 28

How much of the world it touches

NVD CPE configurations

16 products 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 28

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$32,500over 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

$32,500 = $4.99M incident cost x 1 exposure x 0.00652 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

0.00652EPSSNOT IN KEVas of 2026-09-20
Severity9.8 CRITICALreceipt
Harmtotal loss · unauthenticatedreceipt
Exploitationnone in held sources
Defenseno fix version held
Movementrisenreceipt
PLATEAU10Minimal movement since 2023-07-14, 1096 days at 0.01, as of 2026-07-14. arc-rules@v1

Foresight · where to check next

FortinetFortinetSonicWall SMA100Google ChromeIvanti Connect25078

This record is one instance of CWE-787, out-of-bounds write. The index holds 14893 prior instances of this class, 164 KEV-listed. The nearest of its KEV-listed records are drawn beside this. taxonomy@v1

Full pattern panel

Prior records in this weakness class. Each is its own record, dated and receipted.
Color is a claim, not decoration:the hostile worldthe defenseno signalspoke length is how much of the record matches, not how bad it is

Sources disagree here.

Severity score
Honeywell9.8 CRITICALreceipt
NVD7.5 HIGHreceipt
What it costs
HoneywellComplete confidentiality, integrity and availability lossreceipt
NVDComplete availability lossreceipt

Both shown, dated. We don't pick winners. disagreement-rules@v1

Running Honeywell Experion Server? 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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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 confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.1 · the CNA's vectorreceipt
Weakness classCWE-787 Out-of-bounds Writereceipt
Published consequencesCWE-787: Integrity: Modify Memory, Execute Unauthorized Code or Commands; Availability: DoS: Crash, Exit, or Restart; Other: Unexpected State[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

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

Fixed inNo fix version in held sources, as the index stood on 14 Jul 2026.
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 CNA9.8 CRITICALreceipt
CVSS, NVD7.5 HIGHreceipt
Exploit probability0.00652 · top 50% of all CVEsreceipt
Blast breadth4 products across 1 vendorderived
Assigned byHoneywellreceipt
Recorded changes18 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productHoneywell Experion Server; Honeywell Experion Station; Honeywell Engineering Station; Honeywell Direct Stationreceipt
Published rangeshoneywell experion server >= 501.1 <= 501.6hf8; honeywell experion server >= 510.1 <= 510.2hf12; honeywell experion server >= 511.1 <= 511.5tcu3; honeywell experion server >= 520.1 <= 520.1tcu4receipt
Show all 16 published ranges
honeywell experion server >= 501.1 <= 501.6hf8
honeywell experion server >= 510.1 <= 510.2hf12
honeywell experion server >= 511.1 <= 511.5tcu3
honeywell experion server >= 520.1 <= 520.1tcu4
honeywell experion server >= 520.2 <= 520.2tcu2
honeywell experion station >= 501.1 <= 501.6hf8
honeywell experion station >= 510.1 <= 510.2hf12
honeywell experion station >= 511.1 <= 511.5tcu3
honeywell experion station >= 520.1 <= 520.1tcu4
honeywell experion station >= 520.2 <= 520.2tcu2
honeywell engineering station >= 510.1 <= 511.tcu3
honeywell engineering station >= 520.1 <= 520.1tcu4
honeywell engineering station >= 520.2 <= 520.2tcu2
honeywell direct station >= 510.1 <= 511.tcu3
honeywell direct station >= 520.1 <= 520.1tcu4
honeywell direct station >= 520.2 <= 520.2tcu2

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 interactionHoneywell Direct StationCWE-787 out-of-bounds writeFull compromise (C/I/A)C:H / I:H / A:Hexploits CWE-787data compromise

What it is stated by the CNA

Server or Console Station DoS due to heap overflow occurring during the handling of a specially crafted message for a specific configuration operation.  See Honeywell Security Notification for recommendations on upgrading and versioning. 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:N/A:H
weakness
CWE-787
affected versions
honeywell experion server >= 501.1 <= 501.6hf8; honeywell experion server >= 510.1 <= 510.2hf12; honeywell experion server >= 511.1 <= 511.5tcu3; and 13 more, listed in full below
also scored by
[email protected] 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The CNA scored it 9.8 and NVD 7.5. Both are shown because both were published; we do not pick one.

check it yourself process.honeywell.com receipt

Movement the material steps

14 Jul 20230.00061
17 Mar 20250.00351 · scoring model v2025.03.14
15 Jun 20260.00545 · scoring model v2026.06.15
14 Jul 20260.00652
Show all 18 observations
14 Jul 20230.00061
26 Jul 20230.00046
12 Jun 20240.00055
19 Jul 20240.00078
23 Dec 20240.00086
2 Feb 20250.00089
17 Mar 20250.00351
29 Mar 20250.00682
30 Mar 20250.00351
15 Apr 20250.00071
31 May 20250.00055
19 Oct 20250.00071
18 Nov 20250.00351
21 Nov 20250.00071
7 Apr 20260.00089
9 May 20260.00101
15 Jun 20260.00545
14 Jul 20260.00652

18 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 0.00652Published2023-07-13Index as of2026-07-14

The record had been public for 3 years when this index was last written.

Published 2023-07-13 receipt · Index as of 2026-07-14 derived

The pattern, elsewhere

This record is one instance of CWE-787, out-of-bounds write. The index holds 14893 prior instances of this class, 164 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2024-21762 · Fortinet FortiProxymatches 8 of 9KEV listed · 2024receipt
CVE-2022-42475 · Fortinet FortiProxymatches 8 of 9KEV listed · 2023receipt
CVE-2023-27997 · Fortinet FortiOS-6K7Kmatches 8 of 9KEV listed · 2023receipt
CVE-2021-20038 · SonicWall SMA100matches 8 of 9KEV listed · 2021receipt
CVE-2022-2294 · Google Chromematches 7 of 9KEV listed · 2022receipt
CVE-2025-0282 · Ivanti Connect Securematches 6 of 9KEV listed · 2025receipt

"Matches n of m" counts the attributes the two records can both be compared on: the CVSS metrics they share a version of, any weakness class beyond this one, and the vendor. fit-rules@v1

14893 records in this class held. The six above are drawn from the ones CISA has listed as exploited, ranked by how much of the record matches this one. That is why every one of them is KEV-listed: the pool is, so the colour on those spokes says nothing the pool has not already said.

No curated product neighbourhood is held for this product, so the records above are the nearest this index can name. The neighbourhood table covers a small set of products and is extended by hand.

Siblings and hubs

Records related to this one

Its defect family

honeywell experion server

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

Family membership: held values

Nothing we hold separates this record from the others in its defect family. 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

These are index-wide views, not findings about CVE-2023-25078.

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.

Everything on this page is free. Public data. Withholding it protects nothing.