vciy

CVE-2026-40141

INDEX BUILT · 2026-10-18

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High-Severity Vulnerability In Web Application Component of BeyondTrust Remote Support and Privileged Remote Access

CVE-2026-401414 of 4 sources documented this
29

rank 29 = 0 + 25 + 0 + 4 + 0

rank@v1 · scheduled

Someone is already using it

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

EPSS 0.00530  ·  without this subject the record ranks 29

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 9.9, from NVD  ·  without this subject the record ranks 4

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 29

How much of the world it touches

NVD CPE configurations

2 products in the CPE ranges  ·  without this subject the record ranks 25

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 29

Hindsight · the state

0.0053EPSSNOT IN KEVas of 2026-10-18
Severity8.5 HIGHreceipt
Harmpartial impactreceipt
Exploitationnone in held sources
Defenseunaffected versions publishedreceipt
Movementrisenreceipt
PLATEAU10Minimal movement since 2026-07-07, 52 days at 0.01, as of 2026-08-28. 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

Sources disagree here.

Severity score
BT8.5 HIGHreceipt
NVD9.9 CRITICALreceipt
Scoring standard
BTCVSS v4.0receipt
NVDCVSS v3.1receipt

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

Which product do you run? 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 · low privileges required · no user interaction · low attack complexity · no attack requirementsreceipt
ImpactComplete confidentiality loss, with impact on subsequent systemsreceipt
Scored fromCVSS v4.0 · the CNA's vectorreceipt
Weakness classCWE-943 Improper Neutralization of Special Elements in Data Query Logicreceipt
Published consequencesCWE-943: Confidentiality, Integrity, Availability, Access Control: Bypass Protection Mechanism, Read Application Data, Modify Application Data, Varies by Contextcwe-consequences@4.20

CISA KEV & Federal Remediation Deadline from the record and CISA

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

First unaffected version, by branchprivileged remote access 25.3.3; remote support 25.3.3receipt
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.
BOD 26-04 deadlineIf the system is reachable from the internet: 14 days. If not: fix at the next system upgrade.derived
Show full BOD 26-04 deadline

CISA has not scored it, so the directive's own defaults apply: automatable no, technical impact total. Calendar days from the KEV listing or from when you find it on a system, whichever is first. Federal agencies are bound from 7 Dec 2026, and contracts often carry it to suppliers. The directive and its table

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 CNA8.5 HIGHreceipt
CVSS, NVD9.9 CRITICALreceipt
Exploit probability0.0053 · top 56% of all CVEsreceipt
Blast breadth2 products across 1 vendorderived
Assigned byBTreceipt
Recorded changes4 · last 18 Oct 2026derived

Affected & Fixed Versions as published

Affected productBeyondTrust Remote Support; BeyondTrust Privilege Remote Accessreceipt
Published rangesbeyondtrust privileged remote access < 25.3.3; beyondtrust remote support < 25.3.3receipt

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.

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$16,200over 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

$16,200 = $4.99M incident cost x 0.6121449559255632 exposure x 0.0053 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.

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What it is stated by the CNA

A high-severity vulnerability exists in a web application component of BeyondTrust Remote Support and Privileged Remote Access related to the processing of certain input parameters. Insufficient validation of user-supplied input may allow an authenticated attacker with limited privileges to access unintended resources or data beyond their authorization scope. Exploitation is restricted to accounts with specific permissions. receipt

NVD's analysis a second authority

severity
9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
weakness
CWE-943
affected versions
beyondtrust privileged remote access < 25.3.3; beyondtrust remote support < 25.3.3
also scored by
8.5 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H/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

The CNA scored it 8.5 and NVD 9.9. Both are shown because both were published; we do not pick one.

check it yourself beyondtrust.com receipt

Movement the material steps

7 Jul 20260.00407
28 Aug 20260.0053
Show all 4 observations
7 Jul 20260.00407
8 Jul 20260.00478
24 Jul 20260.00494
28 Aug 20260.0053

4 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 0.0053Published2026-07-06Index as of2026-08-28

The record had been public for 1 month when this index was last written.

Published 2026-07-06 receipt · Index as of 2026-08-28 derived

Siblings and hubs

Records related to this one

Fixed with these, by one advisory

bt26-03

Of the 4 records in this advisory that state one, this holds the highest NVD CVSS score: 9.9.

Listed because one advisory covers them, not because they are the same defect. Each record's own state is on its own page.

Grouping: held values

Browse the index from here

These are index-wide views, not findings about CVE-2026-40141.

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.