CVE Intelligence
Medium

CVE-2026-71453 — - External Control of File Name or Path vulnerability in Johnson Controls EasyIO FS32…

- External Control of File Name or Path vulnerability in Johnson Controls EasyIO FS32 allows - traversal attack. This issue affects EasyIO FS32: before 3.0b63.

Published Oct 1, 2026 · Updated Oct 16, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: jci

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
  • EPSS 0.1% (30-day exploitation probability)+0
  • Technical severity (medium)+3

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
0.12%
ahead of 2% of scored CVEs · Oct 15, 2026
Affects
Johnson Controls
EasyIO FS32
CVSS base
5.6
Medium · 2 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
No
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.

  1. Identify exposed assets running the affected vendor/product/version combinations (Johnson Controls EasyIO FS32).
  2. No fix documented in the sources: reduce exposure and monitor the vendor advisory.
  3. Search available logs for exploit probes, errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

VendorProductVersionsStatusSource
Johnson Controls EasyIO FS32 < 3.0b63 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
Adjacent
Attack complexity
High
Attack requirements
Present
Privileges required
High
User interaction
None
Scope
X
Confidentiality (vulnerable system)
Low
Integrity (vulnerable system)
High
Availability (vulnerable system)
High
Confidentiality (subsequent)
High
Integrity (subsequent)
High
Availability (subsequent)
High

Every base score collected

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

ScoreVersionSeverityExpl.ImpactScored by
5.6 CVSS 4.0 Medium — — productsecurity@jci.com via NIST National Vulnerability Database
5.6 CVSS 4.0 Medium — — jci via CVE Program (cve.org) e CISA ADP
CVSS:4.0/AV:A/AC:H/AT:P/PR:H/UI:N/VC:L/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/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 (score shown at the top: productsecurity@jci.com)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-73

Other CVEs with this weakness →

Detection

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

  • Not enough vector or weakness data: use the affected application’s logs as a starting point.
application logs

Timeline

What happened to this CVE, newest first.

  • 2026
  • Affected products added · johnson controls/easyio fs32
    Oct 16, 2026 · CVE Program (cve.org) e CISA ADP
  • SSVC assessment updated
    Oct 16, 2026 · CVE Program (cve.org) e CISA ADP
  • Record published
    Oct 15, 2026
  • CVSS changed · 5.6
    Oct 15, 2026 · NIST National Vulnerability Database
  • Source status changed · → Deferred
    Oct 15, 2026 · NIST National Vulnerability Database
  • Record created in this database
    Oct 15, 2026 · NIST National Vulnerability Database
  • CVE published
    Oct 1, 2026 · jci

Source activity

Repeated readings are counted rather than listed.

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

References

1 on the record

Elsewhere on this site

Johnson Controls
every CVE for this vendor
CWE-73
other pages naming this weakness

Related CVEs (same products)

  • CVE-2026-71452 OS Command Injection in Johnson Controls EasyIO FS32 14d
  • CVE-2026-71448 Insecure Default Initialization of Resource in Johnson Controls EasyIO FS32 14d
  • CVE-2026-71449 : Use of Hard-coded Cryptographic Key vulnerability in Johnson Controls EasyIO FS32… 14d
  • CVE-2026-34493 - On-Chip Debug Interface vulnerability in Johnson Controls EasyIO FS32 allows Collect… 14d
  • CVE-2026-71451 OS Command Injection in Johnson Controls EasyIO FS32 14d
  • CVE-2026-27874 Use of Hard-coded Credentials in Johnson Controls EasyIO FS32 14d

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 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-2026-71453 is "- External Control of File Name or Path vulnerability in Johnson Controls EasyIO FS32…", rated Medium. It affects EasyIO FS32 (Johnson Controls); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 5.6 describes technical severity. EPSS 0.12% estimates the probability of exploitation in 30 days; neither replaces your asset context. 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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