CVE-2016-4532: Directory traversal vulnerability in the WAP interface in Trihedral VTScada (formerly VTS) 8.x through 11.x be

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CRITICAL 9.1REMOTEDOWNGRADE

CVE-2016-4532 is a critical-severity flaw (CVSS 9.1) affecting vtscada. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Directory traversal vulnerability in the WAP interface in Trihedral VTScada (formerly VTS) 8.x through 11.x before 11.2.02 allows remote attackers to read arbitrary files via a crafted pathname.

Why this priority

Critical severity
EPSS top 2%: very likely to be exploited
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	27.6% (top 2%)
CISA exploited list	No
Weakness	CWE-22
Published	2016-06-09
Last modified	2026-06-17

Publisher (CNA): ICS-CERT · Vendor: trihedral

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2016-06-09 10:59 UTCPublished CVE record published
2026-06-17 00:47 UTCUpdated Record last modified

trihedral vtscada DOWNGRADE

Affected: 10.1.05 · 10.1.06 · 10.1.07 · 10.1.12 · 9.0.02 · 9.0.03 · 9.0.08 · 9.1.02

Fixed in: no fixed release known

Safe to downgrade to: a release before 8.0.05

1. Check installed version

apt-cache policy vtscada || rpm -q vtscada || vtscada --version

2. No fixed release: DOWNGRADE to a release before 8.0.05 (Debian / Ubuntu)

apt-cache madison vtscada sudo apt install vtscada=<VERSION_BEFORE_8.0.05> sudo apt-mark hold vtscada

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list vtscada sudo dnf downgrade vtscada-<VERSION_BEFORE_8.0.05> sudo dnf versionlock add vtscada

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2016-4532?

vtscada: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2016-4532 being exploited?

CVE-2016-4532 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2016-4532 affect?

CVE-2016-4532 affects vtscada. Severity is critical (CVSS 9.1). Directory traversal vulnerability in the WAP interface in Trihedral VTScada (formerly VTS) 8.x through 11.x before 11.2.02 allows remote attackers to read arbitrary files via a crafted pathname.

How urgent is CVE-2016-4532?

Priority 61/100. Critical severity; EPSS top 2%: very likely to be exploited; Remotely exploitable, no login, no user action

Related CVEs

CVE-2017-6053 MEDIUM 6.1 UPGRADE A Cross-Site Scripting issue was discovered in Trihedral VTScada Versions prior to 11.2.26
CVE-2017-6045 HIGH 7.5 UPGRADE An Information Exposure issue was discovered in Trihedral VTScada Versions prior to 11.2.26
CVE-2017-6043 HIGH 7.5 UPGRADE A Resource Consumption issue was discovered in Trihedral VTScada Versions prior to 11.2.26
CVE-2017-14031 HIGH 7.8 UPGRADE An Improper Access Control issue was discovered in Trihedral VTScada 11.3.03 and prior
CVE-2017-14029 HIGH 7.8 UPGRADE An Uncontrolled Search Path Element issue was discovered in Trihedral VTScada 11.3.03 and prior

References

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