Is CVE-2017-15906 in the CISA KEV catalog?

No. CVE-2017-15906 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-15906?

CVE-2017-15906 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2017-15906?

CVE-2017-15906 has an EPSS score of 3.36% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-15906?

Upgrade openssh on debian 11 to 1:7.6p1-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2017-15906

MEDIUMEPSS 87th pctl

5.3

CVSS v3

NVD

Description

The process_open function in sftp-server.c in OpenSSH before 7.6 does not properly prevent write operations in readonly mode, which allows attackers to create zero-length files.

CWE-732Incorrect Permission Assignment for Critical Resource

How to fix

Remediation Available

opensshDebian

Fixed in:1:7.6p1-1CVE-2017-15906

opensshUbuntu

Fixed in:1:6.6p1-2ubuntu2.10USN-3538-1

Fixed in:1:7.2p2-4ubuntu2.4USN-3538-1

openssh-serverUbuntu

Fixed in:1:6.6p1-2ubuntu2.10USN-3538-1

Fixed in:1:7.2p2-4ubuntu2.4USN-3538-1

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

ConfidentialityNone

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

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

Vendor Advisory1

openssh.com

Third-Party Advisory7

Other references1

cert-portal.siemens.com

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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 2026-05-28.