CVE-2018-8841: In Advantech WebAccess versions V8.2_20170817 and prior, WebAccess versions V8.3.0 and prior, WebAccess Dashbo

Q: How do I fix CVE-2018-8841?

webaccess: upgrade to newer than 8.3.0; webaccess dashboard: upgrade to newer than 2.0.15; webaccess scada: upgrade to 8.3.1. Exact commands for each OS are on this page.

Q: Is CVE-2018-8841 being exploited?

CVE-2018-8841 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-2018-8841 affect?

CVE-2018-8841 affects webaccess, webaccess dashboard, webaccess scada. Severity is high (CVSS 7.8). In Advantech WebAccess versions V8.2_20170817 and prior, WebAccess versions V8.3.0 and prior, WebAccess Dashboard versions V.2.0.15 and prior, WebAccess Scada Node versions prior to 8.3.1, and WebAccess/NMS 2.0.3 and prior, an improper priv

Routine

HIGH 7.8UPGRADEUPGRADEUPGRADE

CVE-2018-8841 is a high-severity flaw (CVSS 7.8) affecting webaccess, webaccess dashboard, webaccess scada. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Advantech WebAccess versions V8.2_20170817 and prior, WebAccess versions V8.3.0 and prior, WebAccess Dashboard versions V.2.0.15 and prior, WebAccess Scada Node versions prior to 8.3.1, and WebAccess/NMS 2.0.3 and prior, an improper privilege management vulnerability may allow an authenticated user to modify files when read access should only be given to the user.

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 71%)
CISA exploited list	No
Weakness	CWE-269
Published	2018-05-15
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

2018-05-15 22:29 UTCPublished CVE record published
2026-06-17 02:05 UTCUpdated Record last modified

advantech webaccess UPGRADE

Affected: <= 8.2_20170817 · <= 8.3.0

Fixed in: newer than 8.3.0

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 8.3.0 (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.

advantech webaccess dashboard UPGRADE

Affected: <= 2.0.15

Fixed in: newer than 2.0.15

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2.0.15 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade webaccess-dashboard

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade webaccess-dashboard

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

advantech webaccess scada UPGRADE

Affected: < 8.3.1

Fixed in: 8.3.1

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 8.3.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade webaccess-scada

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade webaccess-scada

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

advantech webaccess\/nms UPGRADE

Affected: <= 2.0.3

Fixed in: newer than 2.0.3

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2.0.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade webaccessnms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade webaccessnms

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-2018-8841?

webaccess: upgrade to newer than 8.3.0; webaccess dashboard: upgrade to newer than 2.0.15; webaccess scada: upgrade to 8.3.1. Exact commands for each OS are on this page.

Is CVE-2018-8841 being exploited?

CVE-2018-8841 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-2018-8841 affect?

CVE-2018-8841 affects webaccess, webaccess dashboard, webaccess scada. Severity is high (CVSS 7.8). In Advantech WebAccess versions V8.2_20170817 and prior, WebAccess versions V8.3.0 and prior, WebAccess Dashboard versions V.2.0.15 and prior, WebAccess Scada Node versions prior to 8.3.1, and WebAccess/NMS 2.0.3 and prior, an improper priv

How urgent is CVE-2018-8841?

Priority 34/100. High severity

Software pages

Advantech vulnerabilities

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References

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