CVE-2020-10626: In Fazecast jSerialComm, Version 2.2.2 and prior, an uncontrolled search path element vulnerability could allo

Routine

HIGH 7.8UPGRADEUPGRADE

CVE-2020-10626 is a high-severity flaw (CVSS 7.8) affecting jserialcomm, ecostruxure it gateway. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Fazecast jSerialComm, Version 2.2.2 and prior, an uncontrolled search path element vulnerability could allow a malicious DLL file with the same name of any resident DLLs inside the software installation to execute arbitrary code.

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	None
User interaction	Required
EPSS exploit chance	0.5% (top 57%)
CISA exploited list	No
Weakness	CWE-427
Published	2020-05-14
Last modified	2026-06-17

Publisher (CNA): ICS-CERT · Vendor: fazecast · schneider-electric

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

Am I affected?

Timeline

2020-05-14 16:15 UTCPublished CVE record published
2026-06-17 02:48 UTCUpdated Record last modified

fazecast jserialcomm UPGRADE

Affected: <= 2.2.2

Fixed in: newer than 2.2.2

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to newer than 2.2.2 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade jserialcomm

Note

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

schneider-electric ecostruxure it gateway UPGRADE

Affected: >= 1.5.0.66 and <= 1.5.2.28 · >= 1.6.0.39 and <= 1.6.2.14 · 1.7.0.64

Fixed in: newer than 1.6.2.14

Safe to downgrade to: a release before 1.5.0.66

1. Check installed version

apt-cache policy ecostruxure-it-gateway || rpm -q ecostruxure-it-gateway || ecostruxure-it-gateway --version

2. UPGRADE to newer than 1.6.2.14 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ecostruxure-it-gateway

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ecostruxure-it-gateway

Note

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

3. If no update is available yet, DOWNGRADE to a release before 1.5.0.66 (Debian / Ubuntu)

apt-cache madison ecostruxure-it-gateway sudo apt install ecostruxure-it-gateway=<VERSION_BEFORE_1.5.0.66> sudo apt-mark hold ecostruxure-it-gateway

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list ecostruxure-it-gateway sudo dnf downgrade ecostruxure-it-gateway-<VERSION_BEFORE_1.5.0.66> sudo dnf versionlock add ecostruxure-it-gateway

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-2020-10626?

jserialcomm: upgrade to newer than 2.2.2; ecostruxure it gateway: upgrade to newer than 1.6.2.14. Exact commands for each OS are on this page.

Is CVE-2020-10626 being exploited?

CVE-2020-10626 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-2020-10626 affect?

CVE-2020-10626 affects jserialcomm, ecostruxure it gateway. Severity is high (CVSS 7.8). In Fazecast jSerialComm, Version 2.2.2 and prior, an uncontrolled search path element vulnerability could allow a malicious DLL file with the same name of any resident DLLs inside the software installation to execute arbitrary code.

How urgent is CVE-2020-10626?

Priority 38/100. High severity

Software pages

Schneider Electric vulnerabilities

References

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