CVE-2025-14849: Advantech WebAccess/SCADA is vulnerable to unrestricted file upload, which may allow an attacker to remotely

This month

HIGH 8.8DOWNGRADE

CVE-2025-14849 is a high-severity flaw (CVSS 8.8) affecting webaccess\/scada. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Advantech WebAccess/SCADA is vulnerable to unrestricted file upload, which may allow an attacker to remotely execute arbitrary code.

Why this priority

High severity

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

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-434
Published	2025-12-18
Last modified	2026-09-30

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

Last updated 2026-09-30 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-18 21:15 UTCPublished CVE record published
2026-09-30 23:10 UTCUpdated Record last modified

advantech webaccess\/scada DOWNGRADE

Affected: 9.2.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 9.2.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 9.2.1 (Debian / Ubuntu)

apt-cache madison webaccessscada sudo apt install webaccessscada=<VERSION_BEFORE_9.2.1> sudo apt-mark hold webaccessscada

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

dnf --showduplicates list webaccessscada sudo dnf downgrade webaccessscada-<VERSION_BEFORE_9.2.1> sudo dnf versionlock add webaccessscada

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-2025-14849?

webaccess\/scada: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-14849 being exploited?

CVE-2025-14849 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-2025-14849 affect?

CVE-2025-14849 affects webaccess\/scada. Severity is high (CVSS 8.8). Advantech WebAccess/SCADA is vulnerable to unrestricted file upload, which may allow an attacker to remotely execute arbitrary code.

How urgent is CVE-2025-14849?

Priority 43/100. High severity

Software pages

Advantech vulnerabilities

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References

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