How severe is CVE-2015-6817?

CVE-2015-6817 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2015-6817 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-6817?

CVE-2015-6817 affects Pgbouncer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-6817?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2015-6817 published?

CVE-2015-6817 was published on 2017-05-23 and last updated on 2026-06-17.

CVE-2015-6817

CVE-2015-6817 is a high-severity vulnerability in Pgbouncer with a CVSS 3.x base score of 8.1. 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-287.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 6.8
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Pgbouncer
Published: 2017-05-23
Last modified: 2026-06-17

Description

PgBouncer 1.6.x before 1.6.1, when configured with auth_user, allows remote attackers to gain login access as auth_user via an unknown username.

Frequently asked questions

What is CVE-2015-6817?: PgBouncer 1.6.x before 1.6.1, when configured with auth_user, allows remote attackers to gain login access as auth_user via an unknown username.
How severe is CVE-2015-6817?: CVE-2015-6817 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2015-6817 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-6817?: CVE-2015-6817 affects Pgbouncer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-6817?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2015-6817 published?: CVE-2015-6817 was published on 2017-05-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pgbouncer:pgbouncer:1.6:*:*:*:*:*:*:*

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