Is CVE-2017-17434 in the CISA KEV catalog?

No. CVE-2017-17434 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-17434?

CVE-2017-17434 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2017-17434?

CVE-2017-17434 has an EPSS score of 3.36% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-17434?

Upgrade rsync on debian 11 to 3.1.2-2.1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2017-17434

CRITICALEPSS 87th pctl

9.8

CVSS v3

NVD

Description

The daemon in rsync 3.1.2, and 3.1.3-development before 2017-12-03, does not check for fnamecmp filenames in the daemon_filter_list data structure (in the recv_files function in receiver.c) and also does not apply the sanitize_paths protection mechanism to pathnames found in "xname follows" strings (in the read_ndx_and_attrs function in rsync.c), which allows remote attackers to bypass intended access restrictions.

How to fix

Remediation Available

rsyncDebian

Fixed in:3.1.2-2.1CVE-2017-17434

rsyncUbuntu

Fixed in:3.1.0-2ubuntu0.3USN-3506-1

Fixed in:3.1.1-3ubuntu1.1USN-3506-1

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 InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

3.36%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

Third-Party Advisory2

Other references3

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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.