Critical

CVE-2026-40141 — High-Severity Vulnerability In Web Application Component of BeyondTrust Remote Support and Privileged Remote Access

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.

Published Jul 6, 2026 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: BT

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

Technical severity (critical)+10

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

—

No EPSS score.

Affects

BeyondTrust

Privilege Remote Access and 2 more

CVSS base

9.9

Critical · 3 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

None

none · proof-of-concept · active

Automatable

can an attacker script the kill-chain steps

Technical impact

Partial

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (BeyondTrust Privilege Remote Access, Beyondtrust Privileged Remote Access, Beyondtrust Remote Support).
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
BeyondTrust	Privilege Remote Access	≤ 25.3.2	Vulnerable	CVE Program (cve.org) e CISA ADP
Beyondtrust	Privileged Remote Access	< 25.3.3	Vulnerable	NIST National Vulnerability Database
Beyondtrust	Remote Support	< 25.3.3	Vulnerable	NIST National Vulnerability Database
Beyondtrust	Remote Support	≤ 25.3.2	Vulnerable	CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Network

Attack complexity

Low

Privileges required

Low

User interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
8.5	CVSS 4.0	High	—	—	13061848-ea10-403d-bd75-c83a022c2891 via NIST National Vulnerability Database
8.5	CVSS 4.0	High	—	—	BT via CVE Program (cve.org) e CISA ADP
9.9	CVSS 3.1	Critical	3.1	6.0	nvd@nist.gov via NIST National Vulnerability Database

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H (score shown at the top: nvd@nist.gov)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-943

Other CVEs with this weakness →

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).

web/proxy/WAF logsnetwork IDS/IPS

Timeline

What happened to this CVE, newest first.

2026
Affected products added · beyondtrust/remote support, beyondtrust/privilege remote access
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
SSVC assessment updated
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 15, 2026
CVSS changed · 9.9
Oct 15, 2026 · NIST National Vulnerability Database
Source status changed · → Analyzed
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · NIST National Vulnerability Database
CVE published
Jul 6, 2026 · BT

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

1 on the record

www.beyondtrust.com/trust-center/security-advisories/bt26-03
Vendor Advisory, NIST National Vulnerability Database

Elsewhere on this site

BeyondTrust
every CVE for this vendor

CWE-943
other pages naming this weakness

Related CVEs (same products)

Critical CVE-2026-102764 Improper Origin Validation in Internal Messaging Components of BeyondTrust Remote Support 3h
High CVE-2026-40140 High-Severity Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote Access Jul 6, 2026
High CVE-2026-40138 Critical Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote Access Jul 6, 2026
Critical CVE-2026-40139 Critical Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote Access Jul 6, 2026
Critical CVE-2026-1731 BeyondTrust Remote Support (RS) and Privileged Remote Access (PRA) OS Command Injection Vulnerability KEV Feb 6, 2026
High CVE-2024-12686 BeyondTrust Privileged Remote Access (PRA) and Remote Support (RS) OS Command Injection Vulnerability KEV Dec 18, 2024

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No FIRST EPSS score.
No fixed version, patch or mitigation documented.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-40141 is "High-Severity Vulnerability In Web Application Component of BeyondTrust Remote Support and Privileged Remote Access", rated Critical. It affects Privilege Remote Access (BeyondTrust); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 9.9 describes technical severity. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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