vciy

CVE-2026-102764

INDEX BUILT · 2026-10-18KEV AND EPSS READ 2026-10-25

The record is as the index held it on 2026-10-18. The KEV listing and the EPSS score were read on 2026-10-25. The score is dated to the day it became true. The KEV state is dated to that read. Changes between those two dates are not all shown.

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Improper Origin Validation in Internal Messaging Components of BeyondTrust Remote Support

CVE-2026-1027644 of 4 sources documented this
80

rank 80 = 40 + 25 + 3 + 2 + 10

rank@v1 · act now

Someone is already using it

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

EPSS 0.20341 · CISA KEV listed  ·  without this subject the record ranks 40

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 9.8, from NVD  ·  without this subject the record ranks 55

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2026-10-25  ·  without this subject the record ranks 77

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 78

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 70

Hindsight · the state

0.20341EPSSKEV · LISTED
Severity9.3 CRITICALreceipt
Harmtotal loss · unauthenticatedreceipt
Exploitationin the wild · KEVreceipt
Defenseno fix version held
Movementthreshold crossedreceipt
RISING10Risen from 0.00601 to 0.20341 across 3 observations. arc-rules@v1

Foresight · where to check next

AMI MegaRAC-SPxIvanti ConnectTP-Link TL-WR841NProgress SoftwareZabbix FrontendApache APISIX102764

This record is one instance of CWE-290, authentication bypass by spoofing. The index holds 814 prior instances of this class, 6 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
BT9.3 CRITICALreceipt
NVD9.8 CRITICALreceipt
Scoring standard
BTCVSS v4.0receipt
NVDCVSS v3.1receipt

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

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Check your stack in the mirror · True as of 25 Oct 2026

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Reachnetwork-reachable · no privileges required · no user interaction · low attack complexity · no attack requirementsreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v4.0 · the CNA's vectorreceipt
Weakness classCWE-290 Authentication Bypass by Spoofingreceipt
Published consequencesCWE-290: Access Control: Bypass Protection Mechanism, Gain Privileges or Assume Identitycwe-consequences@4.20
Ransomware campaign useUnknown to CISAreceipt

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 25 Oct 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.
CISA remediation statusoverdue since 2026-10-19receipt
CISA forensic triageRequired before remediation. BOD 26-04 directs that forensic triage data be collected before this is fixed, because applying the fix destroys the evidence of whether it was already used against you.receipt
CISA required actionApply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see…receipt
Show full CISA required action

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

BOD 26-04 deadline3 days, with forensic triage first, whether or not the system is reachable from the internet.derived
Show full BOD 26-04 deadline

CISA scored it on 16 Oct 2026: automatable yes, 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

Published to CISA KEV1 dayderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Exploited in the wild · CISA KEV listed, 2026-10-16.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 1 public repository2026-10-16receipt
  • RUNG 3Exploited in the wild · CISA KEV listed2026-10-16receipt
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA9.3 CRITICALreceipt
CVSS, NVD9.8 CRITICALreceipt
Exploit probability0.20341 · top 33% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byBTreceipt
Recorded changes16 · last 25 Oct 2026derived

Affected & Fixed Versions as published

Affected productBeyondTrust Remote Supportreceipt
Published rangesbeyondtrust remote support <= 26.2.3receipt

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$1.02Mover the next 30 days, if this record is yours
Movement+$956,000on 2026-10-25, the last material move
Basisassumeda published average, not your estate

$1.02M = $4.99M incident cost x 1 exposure x 0.20341 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

The vulnerability exists within internal components of BeyondTrust’s Remote Support product. The components did not adequately validate the origin of the messages it received. Under the right conditions, this could allow an attacker to perform file operations on the appliance. receipt

NVD's analysis a second authority

severity
9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
weakness
CWE-290
affected versions
beyondtrust remote support <= 26.2.3
also scored by
9.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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

The CNA scored it 9.3 and NVD 9.8. Both are shown because both were published; we do not pick one.

check it yourself nvd.nist.gov beyondtrust.com beyondtrustcorp.service-now.com receipt

Dated events

2026-10-16Added to CISA KEV2026-10-19CISA remediation due2026-10-25EPSS moved 0.01 to 0.20

Movement the material steps

16 Oct 20260.00601
25 Oct 20260.20341 · crossed 0.10
Show all 3 observations
16 Oct 20260.00601
17 Oct 20260.0118
25 Oct 20260.20341

3 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 0.20341Published2026-10-15Public PoC · CISA KEV2026-10-16KEV and EPSS read2026-10-25

Listed by CISA one day after it published and the record had been public for 10 days when this index was last written.

Published 2026-10-15 receipt · Public PoC 2026-10-16 receipt · CISA KEV 2026-10-16 receipt · KEV and EPSS read 2026-10-25 derived

The pattern, elsewhere

This record is one instance of CWE-290, authentication bypass by spoofing. The index holds 814 prior instances of this class, 6 KEV-listed. The nearest of its KEV-listed records are drawn beside this. cwe-consequences@4.20

CVE-2024-54085 · AMI MegaRAC-SPxmatches 8 of 9KEV listed · 2025receipt
CVE-2026-104935 · Ivanti Connect Secureonly 1 attribute comparableKEV listed · 2026receipt
CVE-2023-50224 · TP-Link TL-WR841Nonly 1 attribute comparableKEV listed · 2024receipt
CVE-2024-4358 · Progress Software Corporation Telerik Report…only 1 attribute comparableKEV listed · 2024receipt
CVE-2022-23131 · Zabbix Frontendonly 1 attribute comparableKEV listed · 2022receipt
CVE-2022-24112 · Apache APISIXonly 1 attribute comparableKEV listed · 2022receipt

"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

814 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.

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