CVE-2020-16202: WebAccess Node (All versions prior to 9.0.1) has incorrect permissions set for resources used by specific serv

Q: How do I fix CVE-2020-16202?

webaccess: upgrade to 9.0.1. Exact commands for each OS are on this page.

Q: Is CVE-2020-16202 being exploited?

CVE-2020-16202 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2020-16202 affect?

CVE-2020-16202 affects webaccess. Severity is high (CVSS 7.8). WebAccess Node (All versions prior to 9.0.1) has incorrect permissions set for resources used by specific services, which may allow code execution with system privileges.

Routine

HIGH 7.8UPGRADE

CVE-2020-16202 is a high-severity flaw (CVSS 7.8) affecting webaccess. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

WebAccess Node (All versions prior to 9.0.1) has incorrect permissions set for resources used by specific services, which may allow code execution with system privileges.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 68%)
CISA exploited list	No
Weakness	CWE-732
Published	2020-09-22
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2020-09-22 15:15 UTCPublished CVE record published
2026-06-17 02:57 UTCUpdated Record last modified

advantech webaccess UPGRADE

Affected: < 9.0.1

Fixed in: 9.0.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 9.0.1 (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-2020-16202?

webaccess: upgrade to 9.0.1. Exact commands for each OS are on this page.

Is CVE-2020-16202 being exploited?

CVE-2020-16202 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-2020-16202 affect?

CVE-2020-16202 affects webaccess. Severity is high (CVSS 7.8). WebAccess Node (All versions prior to 9.0.1) has incorrect permissions set for resources used by specific services, which may allow code execution with system privileges.

How urgent is CVE-2020-16202?

Priority 35/100. High severity

Software pages

Advantech vulnerabilities

Related CVEs

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CVE-2023-2866 HIGH 7.3 DOWNGRADE If an attacker can trick an authenticated user into loading a maliciously crafted .zip file onto Advantech We
CVE-2021-38408 CRITICAL 9.8 UPGRADE A stack-based buffer overflow vulnerability in Advantech WebAccess Versions 9.02 and prior caused by a lack of
CVE-2021-38389 CRITICAL 9.8 UPGRADE Advantech WebAccess versions 9.02 and prior are vulnerable to a stack-based buffer overflow, which may allow a
CVE-2021-34540 MEDIUM 6.1 DOWNGRADE Advantech WebAccess 8.4.2 and 8.4.4 allows XSS via the username column of the bwRoot.asp page of WADashboard.

References

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