CVE-2018-11720: Xovis PC2, PC2R, and PC3 devices through 3.6.0 allow Directory Traversal.

Q: How do I fix CVE-2018-11720?

pc2r firmware: upgrade to newer than 3.6.0; pc3 firmware: upgrade to newer than 3.6.0; pc2 firmware: upgrade to newer than 3.6.0. Exact commands for each OS are on this page.

Q: Is CVE-2018-11720 being exploited?

CVE-2018-11720 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-2018-11720 affect?

CVE-2018-11720 affects pc2r firmware, pc3 firmware, pc2 firmware. Severity is high (CVSS 7.5). Xovis PC2, PC2R, and PC3 devices through 3.6.0 allow Directory Traversal.

Q: How urgent is CVE-2018-11720?

Priority 51/100. High severity; Remotely exploitable, no login, no user action

This month

HIGH 7.5REMOTEUPGRADEUPGRADEUPGRADE

CVE-2018-11720 is a high-severity flaw (CVSS 7.5) affecting pc2r firmware, pc3 firmware, pc2 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Xovis PC2, PC2R, and PC3 devices through 3.6.0 allow Directory Traversal.

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.7% (top 23%)
CISA exploited list	No
Weakness	CWE-22
Published	2018-08-30
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: xovis

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

Am I affected?

Timeline

2018-08-30 16:29 UTCPublished CVE record published
2026-06-17 01:36 UTCUpdated Record last modified

xovis pc2r firmware UPGRADE

Affected: <= 3.6.0

Fixed in: newer than 3.6.0

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

xovis pc3 firmware UPGRADE

Affected: <= 3.6.0

Fixed in: newer than 3.6.0

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

xovis pc2 firmware UPGRADE

Affected: <= 3.6.0

Fixed in: newer than 3.6.0

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

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-2018-11720?

pc2r firmware: upgrade to newer than 3.6.0; pc3 firmware: upgrade to newer than 3.6.0; pc2 firmware: upgrade to newer than 3.6.0. Exact commands for each OS are on this page.

Is CVE-2018-11720 being exploited?

CVE-2018-11720 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-2018-11720 affect?

CVE-2018-11720 affects pc2r firmware, pc3 firmware, pc2 firmware. Severity is high (CVSS 7.5). Xovis PC2, PC2R, and PC3 devices through 3.6.0 allow Directory Traversal.

How urgent is CVE-2018-11720?

Priority 51/100. High severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2018-11719 MEDIUM 4.9 UPGRADE UPGRADE Xovis PC2, PC2R, and PC3 devices through 3.6.0 allow XXE.
CVE-2018-11718 HIGH 8.8 UPGRADE UPGRADE Xovis PC2, PC2R, and PC3 devices through 3.6.0 allow CSRF.

References

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