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CVE-2016-4525: Unspecified ActiveX controls in Advantech WebAccess before 8.1_20160519 allow remote authenticated users to ob

33
Routine
MEDIUM 6.6UPGRADE

CVE-2016-4525 is a medium-severity flaw (CVSS 6.6) affecting webaccess. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Unspecified ActiveX controls in Advantech WebAccess before 8.1_20160519 allow remote authenticated users to obtain sensitive information or modify data via unknown vectors, related to the INTERFACESAFE_FOR_UNTRUSTED_CALLER (aka safe for scripting) flag.

Why this priority

  • No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score6.6 (Medium)
Attack vectorLocal
Attack complexityLow
Privileges neededLow
User interactionRequired
EPSS exploit chance0.4% (top 61%)
CISA exploited listNo
Published2016-06-25
Last modified2026-06-17
Publisher (CNA): ICS-CERT · Vendor: advantech

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

Am I affected?

Timeline

advantech webaccess UPGRADE
Affected: <= 8.1
Fixed in: newer than 8.1
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy webaccess || rpm -q webaccess || webaccess --version
2. UPGRADE to newer than 8.1 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade webaccess
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade webaccess
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
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-2016-4525?

webaccess: upgrade to newer than 8.1. Exact commands for each OS are on this page.

Is CVE-2016-4525 being exploited?

CVE-2016-4525 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-2016-4525 affect?

CVE-2016-4525 affects webaccess. Severity is medium (CVSS 6.6). Unspecified ActiveX controls in Advantech WebAccess before 8.1_20160519 allow remote authenticated users to obtain sensitive information or modify data via unknown vectors, related to the INTERFACESAFE_FOR_UNTRUSTED_CALLER (aka safe for scr

How urgent is CVE-2016-4525?

Priority 33/100. No elevated risk signals yet.

Software pages

Advantech vulnerabilities

Related CVEs

References

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