Is CVE-2017-15864 in the CISA KEV catalog?

No. CVE-2017-15864 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-15864?

CVE-2017-15864 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2017-15864?

CVE-2017-15864 has an EPSS score of 1.77% (75th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-15864?

Upgrade otrs2 on debian 11 to 4.0.7-2 or later.

CVE & CISA-KEV Catalog

CVE-2017-15864

HIGHEPSS 75th pctl

8.8

CVSS v3

NVD

Description

In the Agent Frontend in Open Ticket Request System (OTRS) 3.3.x through 3.3.18, with a crafted URL it is possible to gain information like database user and password.

How to fix

Remediation Available

otrs2Debian

Fixed in:4.0.7-2CVE-2017-15864

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

1.77%probability of exploitation in 30 days

75thpercentile

Elevated risk: more likely to be exploited than 75% of all known CVEs.

References

Vendor Advisory1

otrs.com

Third-Party Advisory2

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.