How severe is CVE-2017-8806?

CVE-2017-8806 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2017-8806 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-8806?

CVE-2017-8806 affects Postgresql. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-8806?

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

When was CVE-2017-8806 published?

CVE-2017-8806 was published on 2017-11-13 and last updated on 2026-06-17.

CVE-2017-8806

CVE-2017-8806 is a medium-severity vulnerability in Postgresql with a CVSS 3.x base score of 5.5. 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-59.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 3.6
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-59
Affected product: Postgresql
Published: 2017-11-13
Last modified: 2026-06-17

Description

The Debian pg_ctlcluster, pg_createcluster, and pg_upgradecluster scripts, as distributed in the Debian postgresql-common package before 181+deb9u1 for PostgreSQL (and other packages related to Debian and Ubuntu), handled symbolic links insecurely, which could result in local denial of service by overwriting arbitrary files.

Frequently asked questions

What is CVE-2017-8806?: The Debian pg_ctlcluster, pg_createcluster, and pg_upgradecluster scripts, as distributed in the Debian postgresql-common package before 181+deb9u1 for PostgreSQL (and other packages related to Debian and Ubuntu), handled symbolic links insecurely, which could result in local denial of service by overwriting arbitrary files.
How severe is CVE-2017-8806?: CVE-2017-8806 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2017-8806 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-8806?: CVE-2017-8806 affects Postgresql. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-8806?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-8806 published?: CVE-2017-8806 was published on 2017-11-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:postgresql:postgresql:-:*:*:*:*:*:*:*

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