CVE-2018-11640: XML External Entity (XXE) vulnerability in the web service in Dialogic PowerMedia XMS before 3.5 SU2 allows re

Q: How do I fix CVE-2018-11640?

powermedia xms: upgrade to newer than 3.5. Exact commands for each OS are on this page.

Q: Is CVE-2018-11640 being exploited?

CVE-2018-11640 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-2018-11640 affect?

CVE-2018-11640 affects powermedia xms. Severity is critical (CVSS 9.1). XML External Entity (XXE) vulnerability in the web service in Dialogic PowerMedia XMS before 3.5 SU2 allows remote attackers to read arbitrary files or cause a denial of service (resource consumption).

Q: How urgent is CVE-2018-11640?

Priority 62/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

CRITICAL 9.1REMOTEUPGRADE

CVE-2018-11640 is a critical-severity flaw (CVSS 9.1) affecting powermedia xms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

XML External Entity (XXE) vulnerability in the web service in Dialogic PowerMedia XMS before 3.5 SU2 allows remote attackers to read arbitrary files or cause a denial of service (resource consumption).

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	1.9% (top 20%)
CISA exploited list	No
Weakness	CWE-611
Published	2018-07-03
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: dialogic

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

Am I affected?

Timeline

2018-07-03 17:29 UTCPublished CVE record published
2026-06-17 01:36 UTCUpdated Record last modified

dialogic powermedia xms UPGRADE

Affected: <= 3.5

Fixed in: newer than 3.5

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy powermedia-xms || rpm -q powermedia-xms || powermedia-xms --version

2. UPGRADE to newer than 3.5 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade powermedia-xms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade powermedia-xms

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-2018-11640?

powermedia xms: upgrade to newer than 3.5. Exact commands for each OS are on this page.

Is CVE-2018-11640 being exploited?

CVE-2018-11640 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-2018-11640 affect?

CVE-2018-11640 affects powermedia xms. Severity is critical (CVSS 9.1). XML External Entity (XXE) vulnerability in the web service in Dialogic PowerMedia XMS before 3.5 SU2 allows remote attackers to read arbitrary files or cause a denial of service (resource consumption).

How urgent is CVE-2018-11640?

Priority 62/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2018-11643 HIGH 8.8 UPGRADE SQL injection vulnerability in the administrative console in Dialogic PowerMedia XMS through 3.5 allows remote
CVE-2018-11642 HIGH 7.8 UPGRADE Incorrect Permission Assignment on the /var/www/xms/cleanzip.sh shell script run periodically in Dialogic Powe
CVE-2018-11641 CRITICAL 9.8 UPGRADE Use of Hard-coded Credentials in /var/www/xms/application/controllers/gatherLogs.php in the administrative con
CVE-2018-11639 HIGH 8.1 UPGRADE Plaintext Storage of Passwords within Cookies in /var/www/xms/application/controllers/verifyLogin.php in the a
CVE-2018-11638 HIGH 7.2 UPGRADE Unrestricted Upload of a File with a Dangerous Type in the administrative console in Dialogic PowerMedia XMS t

References

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