How severe is CVE-2018-11640?

CVE-2018-11640 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.

Is CVE-2018-11640 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-11640?

CVE-2018-11640 affects Dialogic Powermedia Xms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-11640?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2018-11640 published?

CVE-2018-11640 was published on 2018-07-03 and last updated on 2026-06-17.

CVE-2018-11640

CVE-2018-11640 is a critical-severity vulnerability in Dialogic Powermedia Xms with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-611.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 6.4
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-611
Affected product: Dialogic Powermedia Xms
Published: 2018-07-03
Last modified: 2026-06-17

Description

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).

Frequently asked questions

What is CVE-2018-11640?: 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 severe is CVE-2018-11640?: CVE-2018-11640 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability high.
Is CVE-2018-11640 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-11640?: CVE-2018-11640 affects Dialogic Powermedia Xms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-11640?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-11640 published?: CVE-2018-11640 was published on 2018-07-03 and last updated on 2026-06-17.

References

https://d3adend.org/blog/?p=1398

Affected products (1)

cpe:2.3:a:dialogic:powermedia_xms:*:*:*:*:*:*:*:*

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