CVE-2016-0766

PostgreSQL before 9.1.20, 9.2.x before 9.2.15, 9.3.x before 9.3.11, 9.4.x before 9.4.6, and 9.5.x before 9.5.1 does not properly restrict access to unspecified custom configuration settings (GUCS) for PL/Java, which allows attackers to gain privileges via unspecified vectors.

Published: 2016-02-17 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-0766 is rated High Risk (69.4/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.74%). EPSS rose +3.24% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2016-0766

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.51% 3.74% +3.24%
2 2026-05-13 0.37% 0.51% +0.13%
3 2026-03-11 — 0.37% —

Full EPSS history (15 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-0766

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
9.0 2.0 HIGH
AV:N/AC:L/Au:S/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.0 10.0 [email protected]

Weakness enumeration for CVE-2016-0766

OS Trackers for CVE-2016-0766

vendor priority summary link
gentoo normal CVE-2016-0766: 1 GLSA(s) (201701-33), 1 atom(s) (dev-db/postgresql); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2016-0766
suse medium CVE-2016-0766 severity moderate: SUSE including 95 source package names (libecpg6-10.10-1.15.1, libecpg6-10.5-1.3.1, …), 200 product×package rows across 35 product lines (SUSE Linux Enterprise Desktop 11 SP4, SUSE Linux Enterprise Desktop 12, … (35 product lines)): Fixed 190, Known Not Affected 10. https://www.suse.com/security/cve/CVE-2016-0766/
ubuntu medium CVE-2016-0766 medium priority: Ubuntu including 5 source packages (postgresql-8.4, postgresql-9.1, postgresql-9.3, postgresql-9.4, postgresql-9.5), 40 status rows across 8 suites (precise, trusty, upstream, vivid, wily, xenial, yakkety, zesty): DNE 27, released 6, needs-triage 3, ignored 2, not-affected 2. https://ubuntu.com/security/CVE-2016-0766

Affected software / configurations for CVE-2016-0766

Vendor Product Version Raw CPE
postgresql postgresql >= 9.1.0, < 9.1.20 cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*
postgresql postgresql >= 9.2, < 9.2.15 cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*
postgresql postgresql >= 9.3, < 9.3.11 cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*
postgresql postgresql >= 9.4, < 9.4.6 cpe:2.3:a:postgresql:postgresql:*:*:*:*:*:*:*:*
postgresql postgresql 9.5 cpe:2.3:a:postgresql:postgresql:9.5:*:*:*:*:*:*:*
canonical ubuntu_linux 12.04 cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 15.10 cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
debian debian_linux 7.0 cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

References for CVE-2016-0766

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00049.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00052.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00054.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-02/msg00056.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00016.html Mailing List Third Party Advisory
http://www.debian.org/security/2016/dsa-3475 Third Party Advisory
http://www.debian.org/security/2016/dsa-3476 Third Party Advisory
http://www.postgresql.org/about/news/1644/ Vendor Advisory
http://www.postgresql.org/docs/current/static/release-9-1-20.html Vendor Advisory
http://www.postgresql.org/docs/current/static/release-9-2-15.html Vendor Advisory
http://www.postgresql.org/docs/current/static/release-9-3-11.html Vendor Advisory
http://www.postgresql.org/docs/current/static/release-9-4-6.html Vendor Advisory
http://www.postgresql.org/docs/current/static/release-9-5-1.html Vendor Advisory
http://www.securityfocus.com/bid/83184 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1035005 Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/USN-2894-1 Third Party Advisory
https://security.gentoo.org/glsa/201701-33 Third Party Advisory
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