How severe is CVE-2018-11635?

CVE-2018-11635 has a CVSS 3.x base score of 9.8, 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 high, and availability high.

Is CVE-2018-11635 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-11635?

CVE-2018-11635 affects Dialogic Powermedia Xms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-11635?

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-2018-11635 published?

CVE-2018-11635 was published on 2018-07-03 and last updated on 2026-06-17.

CVE-2018-11635

CVE-2018-11635 is a critical-severity vulnerability in Dialogic Powermedia Xms with a CVSS 3.x base score of 9.8. 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-798.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Dialogic Powermedia Xms
Published: 2018-07-03
Last modified: 2026-06-17

Description

Use of a Hard-coded Cryptographic Key used to protect cookie session data in /var/www/xms/application/config/config.php in the administrative console in Dialogic PowerMedia XMS through 3.5 allows remote attackers to bypass authentication.

Frequently asked questions

What is CVE-2018-11635?: Use of a Hard-coded Cryptographic Key used to protect cookie session data in /var/www/xms/application/config/config.php in the administrative console in Dialogic PowerMedia XMS through 3.5 allows remote attackers to bypass authentication.
How severe is CVE-2018-11635?: CVE-2018-11635 has a CVSS 3.x base score of 9.8, 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 high, and availability high.
Is CVE-2018-11635 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-11635?: CVE-2018-11635 affects Dialogic Powermedia Xms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-11635?: 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-2018-11635 published?: CVE-2018-11635 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:*:*:*:*:*:*:*:*

More vulnerabilities in Dialogic Powermedia Xms

CVE-2018-11641 — Critical (CVSS 9.8): Use of Hard-coded Credentials in /var/www/xms/application/controllers/gatherLogs.php in the administrative console in…
CVE-2018-11640 — Critical (CVSS 9.1): XML External Entity (XXE) vulnerability in the web service in Dialogic PowerMedia XMS before 3.5 SU2 allows remote…
CVE-2018-11643 — High (CVSS 8.8): SQL injection vulnerability in the administrative console in Dialogic PowerMedia XMS through 3.5 allows remote…
CVE-2018-11636 — High (CVSS 8.8): Cross-site request forgery (CSRF) vulnerability in the administrative console in Dialogic PowerMedia XMS through 3.5…
CVE-2018-11639 — High (CVSS 8.1): Plaintext Storage of Passwords within Cookies in /var/www/xms/application/controllers/verifyLogin.php in the…
CVE-2018-11642 — High (CVSS 7.8): Incorrect Permission Assignment on the /var/www/xms/cleanzip.sh shell script run periodically in Dialogic PowerMedia…

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