Is CVE-2017-17459 in the CISA KEV catalog?

No. CVE-2017-17459 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-17459?

CVE-2017-17459 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2017-17459?

CVE-2017-17459 has an EPSS score of 2.80% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-17459?

Upgrade fossil on debian 11 to 1:2.4-1 or later.

CVE & CISA-KEV Catalog

CVE-2017-17459

HIGHEPSS 85th pctl

8.8

CVSS v3

NVD

Description

http_transport.c in Fossil before 2.4, when the SSH sync protocol is used, allows user-assisted remote attackers to execute arbitrary commands via an ssh URL with an initial dash character in the hostname, a related issue to CVE-2017-9800, CVE-2017-12836, CVE-2017-12976, CVE-2017-14176, CVE-2017-16228, CVE-2017-1000116, and CVE-2017-1000117.

How to fix

Remediation Available

fossilDebian

Fixed in:1:2.4-1CVE-2017-17459

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 RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

2.80%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Patch1

fossil-scm.org

Vendor Advisory1

fossil-scm.org

Issue Tracking1

bugzilla.opensuse.org

Other references1

lists.fedoraproject.org

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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.