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CVE-2019-13550: In WebAccess, versions 8.4.1 and prior, an improper authorization vulnerability may allow an attacker to discl

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This week
CRITICAL 9.8REMOTEUPGRADE

CVE-2019-13550 is a critical-severity flaw (CVSS 9.8) affecting webaccess. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In WebAccess, versions 8.4.1 and prior, an improper authorization vulnerability may allow an attacker to disclose sensitive information, cause improper control of generation of code, which may allow remote code execution or cause a system crash.

Why this priority

  • Critical severity
  • Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score9.8 (Critical)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionNone
EPSS exploit chance2.8% (top 13%)
CISA exploited listNo
WeaknessCWE-285
Published2019-09-18
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: <= 8.4.1
Fixed in: newer than 8.4.1
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 8.4.1 (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-2019-13550?

webaccess: upgrade to newer than 8.4.1. Exact commands for each OS are on this page.

Is CVE-2019-13550 being exploited?

CVE-2019-13550 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-2019-13550 affect?

CVE-2019-13550 affects webaccess. Severity is critical (CVSS 9.8). In WebAccess, versions 8.4.1 and prior, an improper authorization vulnerability may allow an attacker to disclose sensitive information, cause improper control of generation of code, which may allow remote code execution or cause a system c

How urgent is CVE-2019-13550?

Priority 61/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Advantech vulnerabilities

Related CVEs

References

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