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CVE-2017-7546

65
FAUCET Score

CVE-2017-7546 is a critical authentication bypass vulnerability affecting PostgreSQL versions prior to 9.2.22, 9.3.18, 9.4.13, 9.5.8, and 9.6.4, including Debian distributions. This flaw allows remote attackers to gain unauthorized access to database accounts configured with empty passwords. With a CVSS score of 9.8, it presents a severe risk due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, indicating awareness of its potential impact.

Impacted Technologies

VendorProductVersion(s)CPE
9.2CPE matchmatch criteria
cpe:2.3:a:postgresql:postgresql:9.2:*:*:*:*:*:*:*
9.2.1CPE matchmatch criteria
cpe:2.3:a:postgresql:postgresql:9.2.1:*:*:*:*:*:*:*
9.2.2CPE matchmatch criteria
cpe:2.3:a:postgresql:postgresql:9.2.2:*:*:*:*:*:*:*
9.2.3CPE matchmatch criteria
cpe:2.3:a:postgresql:postgresql:9.2.3:*:*:*:*:*:*:*
9.2.4CPE matchmatch criteria
cpe:2.3:a:postgresql:postgresql:9.2.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
61.57%
Probability of exploitation in next 30 days
EPSS Percentile
99.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.6157 is in the 97th percentile among its peer group of 36,833 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (13)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: postgresql-0:8.4.20-8.el6_9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: postgresql-0:9.2.23-1.el7_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-postgresql95-postgresql-0:9.5.9-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6Fixed in: rh-postgresql94-postgresql-0:9.4.14-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUSFixed in: rh-postgresql95-postgresql-0:9.5.9-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 6.7 EUSFixed in: rh-postgresql94-postgresql-0:9.4.14-1.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-postgresql95-postgresql-0:9.5.9-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7Fixed in: rh-postgresql94-postgresql-0:9.4.14-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUSFixed in: rh-postgresql95-postgresql-0:9.5.9-1.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Software Collections for Red Hat Enterprise Linux 7.3 EUSFixed in: rh-postgresql94-postgresql-0:9.4.14-1.el7
View patch
redhatno patchvia redhat_api
Product: Red Hat Satellite 5Fixed in: postgresql92-postgresql
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: postgresql
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: postgresql84

Vendor Advisories (1)

redhatCVE-2017-7546Moderate

postgresql: Empty password accepted in some authentication methods

Aug 10, 2017

References

access.redhat.com / errata/RHSA-2017:2677
Third Party Advisory
access.redhat.com / errata/RHSA-2017:2678
Third Party Advisory
access.redhat.com / errata/RHSA-2017:2728
Third Party Advisory
access.redhat.com / errata/RHSA-2017:2860
Third Party Advisory
security.gentoo.org / glsa/201710-06
Third Party Advisory
postgresql.org / about/news/1772
Vendor Advisory
debian.org / security/2017/dsa-3935
Third Party Advisory
debian.org / security/2017/dsa-3936
Third Party Advisory
securityfocus.com / bid/100278
Third Party AdvisoryVDB Entry
securitytracker.com / id/1039142
Third Party AdvisoryVDB Entry