How severe is CVE-2019-16951?

CVE-2019-16951 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2019-16951 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-16951?

CVE-2019-16951 primarily affects Enghouse Web Chat. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-16951?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2019-16951 published?

CVE-2019-16951 was published on 2019-11-13 and last updated on 2026-06-17.

CVE-2019-16951

CVE-2019-16951 is a medium-severity vulnerability in Enghouse Web Chat with a CVSS 3.x base score of 5.3. 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-829.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-829
Affected product: Enghouse Web Chat
Published: 2019-11-13
Last modified: 2026-06-17

Description

A remote file include (RFI) issue was discovered in Enghouse Web Chat 6.2.284.34. One can replace the localhost attribute with one's own domain name. When the product calls this domain after the POST request is sent, it retrieves an attacker's data and displays it. Also worth mentioning is the amount of information sent in the request from this product to the attacker: it reveals information the public should not have. This includes pathnames and internal ip addresses.

Frequently asked questions

What is CVE-2019-16951?: A remote file include (RFI) issue was discovered in Enghouse Web Chat 6.2.284.34. One can replace the localhost attribute with one's own domain name. When the product calls this domain after the POST request is sent, it retrieves an attacker's data and displays it. Also worth mentioning is the amount of information sent in the request from this product to the attacker: it reveals information the public should not have. This includes pathnames and internal ip addresses.
How severe is CVE-2019-16951?: CVE-2019-16951 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2019-16951 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-16951?: CVE-2019-16951 primarily affects Enghouse Web Chat. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-16951?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-16951 published?: CVE-2019-16951 was published on 2019-11-13 and last updated on 2026-06-17.

References

https://mjlanders.com/2019/11/07/multiple-vulnerabilities-found-in-enghouse-zeacom-web-chat/

Affected products (2)

cpe:2.3:a:enghouse:web_chat:6.1.300.31:*:*:*:*:*:*:*
cpe:2.3:a:enghouse:web_chat:6.2.284.34:*:*:*:*:*:*:*

More vulnerabilities in Enghouse Web Chat

CVE-2019-16948 — Critical (CVSS 9.8): An SSRF issue was discovered in Enghouse Web Chat 6.1.300.31. In any POST request, one can replace the port number at…
CVE-2019-16949 — Medium (CVSS 6.5): An issue was discovered in Enghouse Web Chat 6.1.300.31 and 6.2.284.34. A user is allowed to send an archive of their…
CVE-2020-13972 — Medium (CVSS 6.1): Enghouse Web Chat 6.2.284.34 allows XSS. When one enters their own domain name in the WebServiceLocation parameter, the…
CVE-2019-16950 — Medium (CVSS 6.1): An XSS issue was discovered in Enghouse Web Chat 6.1.300.31 and 6.2.284.34. The QueueName parameter of a GET request…

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