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SALTO ProAccess Space EUVDEUVD-2026-45039

| CVE-2026-11889 HIGH
Authorization Bypass Through User-Controlled Key (CWE-639)
2026-07-16 icscert GHSA-4g4j-8g2w-gqh9
Privilege Escalation Authentication Bypass Proaccess Space
7.1
CVSS 4.0 · Vendor: icscert
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Severity by source

Vendor (icscert) PRIMARY
7.1 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/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
vuln.today AI
6.5 MEDIUM

Authenticated tenant user (PR:L) exploits an IDOR over the network (AV:N/AC:L/UI:N) to alter cross-tenant resources, giving integrity impact only (I:H, C:N/A:N), no scope change.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (icscert).

CVSS VectorVendor: icscert

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/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
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

5
Patch available
Jul 16, 2026 - 22:19 EUVD
Analysis Generated
Jul 16, 2026 - 21:30 vuln.today
Severity Changed
Jul 16, 2026 - 21:22 NVD
MEDIUM HIGH
CVSS changed
Jul 16, 2026 - 21:22 NVD
6.5 (MEDIUM) 7.1 (HIGH)
CVE Published
Jul 16, 2026 - 20:38 cve.org
HIGH 7.1

DescriptionCVE.org

SALTO ProAccess Space software using the tenancy feature / logical partition is vulnerable to a privilege escalation attack that could allow an authorized attacker to access any space managed by the affected product.

AnalysisAI

Privilege escalation in SALTO ProAccess Space access-control software allows an authenticated tenant user to break out of their assigned logical partition and reach any space managed by the platform. The flaw exists specifically when the multi-tenancy / logical partition feature is in use, letting a low-privileged authorized user manipulate an object reference to act on resources belonging to other tenants. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Authenticate as low-privileged tenant user
Delivery
Enumerate other partitions' space identifiers
Exploit
Submit request with cross-tenant object reference
Execution
Bypass partition authorization check (CWE-639)
Impact
Access/modify spaces of other tenants
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Vulnerability AssessmentAI

Exploitation Exploitation requires the ProAccess Space deployment to be running with the tenancy feature / logical partition enabled - that specific configuration IS the precondition; single-tenant installations without logical partitioning are not in scope. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The supplied CVSS 4.0 vector (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N, base 7.1 / High) indicates network-reachable, low-complexity exploitation requiring low privileges and no user interaction, with high integrity impact but no confidentiality or availability impact - meaning an attacker can alter/control resources across tenants rather than merely read data or crash the service. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker who holds or obtains a legitimate low-privileged operator account for one tenant in a shared ProAccess Space deployment sends crafted requests that reference a partition or space identifier belonging to a different tenant. Because the server trusts the supplied object reference (CWE-639), the request is honored, letting the attacker view or modify access-control configuration for spaces they should not manage. …
Remediation No vendor-released patch version is identified at time of analysis in the provided data; consult the CISA ICS advisory (https://www.cisa.gov/news-events/ics-advisories/icsa-26-197-07) and its CSAF file (https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-197-07.json) for the fixed release and vendor guidance, then upgrade ProAccess Space to that version once published. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, audit all SALTO ProAccess Space deployments to identify systems with multi-tenancy enabled and document current tenant configurations, assigned user privileges, and logical partition assignments. …

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An issue was discovered in SALTO ProAccess SPACE 5.4.3.0. Rated critical severity (CVSS 9.8), this vulnerability is remo
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An issue was discovered in SALTO ProAccess SPACE 5.4.3.0. Rated medium severity (CVSS 5.5), this vulnerability is low at
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SALTO ProAccess SPACE 5.4.3.0 allows XSS. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable,

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EUVD-2026-45039 vulnerability details – vuln.today
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