CVE-2017-7546 [Critical] | Authentication Bypass in Postgresql

CVE-2017-7546 is rated High Risk (78.9/100): CVSS Critical severity, with high exploitation likelihood (EPSS 61.57%, 99th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. EPSS rose +28.44% over the last day, indicating growing attacker interest. High exploitation likelihood—assess exposure and prioritize remediation.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	33.12%	61.57%	+28.44%
2	2026-03-11	31.12%	33.12%	+2.00%
3	2026-03-04	—	31.12%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

33.12%

61.57%

+28.44%

2026-03-11

31.12%

33.12%

+2.00%

2026-03-04

—

31.12%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
9.8	3.0	CRITICAL	`CVSS:3.0/AV:N/AC:L/PR:N/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:N) No account or special rights needed—anonymous or random user is enough. 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.	3.9	5.9	[email protected]
7.5	2.0	HIGH	`AV:N/AC:L/Au:N/C:P/I:P/A:P` 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:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:P) Partial availability impact.	10.0	6.4	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

9.8

3.0

CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/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:N): No account or special rights needed—anonymous or random user is enough.
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.

3.9

5.9

[email protected]

7.5

2.0

HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P 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:N): No authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:P): Partial availability impact.

10.0

6.4

[email protected]

OS Trackers for CVE-2017-7546

vendor	priority	summary	link
`alpine`	—	CVE-2017-7546: 3 source package rows (postgresql, postgresql14, postgresql15); 16 state rows across 11 repos (3.10-main, 3.11-main, 3.12-main, 3.17-main, 3.18-main, 3.19-community, 3.19-main, 3.20-community, 3.20-main, edge-community, edge-main); fixed 16, open 0.	https://security.alpinelinux.org/vuln/CVE-2017-7546
`gentoo`	normal	CVE-2017-7546: 1 GLSA(s) (201710-06), 1 atom(s) (dev-db/postgresql); latest impact normal.	https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2017-7546
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2017-7546
`suse`	medium	CVE-2017-7546 severity moderate: SUSE including 71 source package names (libecpg6, libecpg6-10.10-1.15.1, …), 256 product×package rows across 35 product lines (SUSE Liberty Linux 7, SUSE Linux Enterprise Desktop 12 SP2, … (35 product lines)): Fixed 222, Known Not Affected 34.	https://www.suse.com/security/cve/CVE-2017-7546/
`ubuntu`	low	CVE-2017-7546 low priority: Ubuntu including 5 source packages (postgresql-10, postgresql-9.1, postgresql-9.3, postgresql-9.5, postgresql-9.6), 40 status rows across 8 suites (artful, bionic, cosmic, disco, trusty, upstream, xenial, zesty): DNE 29, released 6, not-affected 3, needs-triage 2.	https://ubuntu.com/security/CVE-2017-7546

Affected software / configurations for CVE-2017-7546

Vendor	Product	Version	Raw CPE
postgresql	postgresql	9.2	cpe:2.3:a:postgresql:postgresql:9.2:::::::*
postgresql	postgresql	9.2.1	cpe:2.3:a:postgresql:postgresql:9.2.1:::::::*
postgresql	postgresql	9.2.2	cpe:2.3:a:postgresql:postgresql:9.2.2:::::::*
postgresql	postgresql	9.2.3	cpe:2.3:a:postgresql:postgresql:9.2.3:::::::*
postgresql	postgresql	9.2.4	cpe:2.3:a:postgresql:postgresql:9.2.4:::::::*
postgresql	postgresql	9.2.5	cpe:2.3:a:postgresql:postgresql:9.2.5:::::::*
postgresql	postgresql	9.2.6	cpe:2.3:a:postgresql:postgresql:9.2.6:::::::*
postgresql	postgresql	9.2.7	cpe:2.3:a:postgresql:postgresql:9.2.7:::::::*
postgresql	postgresql	9.2.8	cpe:2.3:a:postgresql:postgresql:9.2.8:::::::*
postgresql	postgresql	9.2.9	cpe:2.3:a:postgresql:postgresql:9.2.9:::::::*
postgresql	postgresql	9.2.10	cpe:2.3:a:postgresql:postgresql:9.2.10:::::::*
postgresql	postgresql	9.2.11	cpe:2.3:a:postgresql:postgresql:9.2.11:::::::*
postgresql	postgresql	9.2.12	cpe:2.3:a:postgresql:postgresql:9.2.12:::::::*
postgresql	postgresql	9.2.13	cpe:2.3:a:postgresql:postgresql:9.2.13:::::::*
postgresql	postgresql	9.2.14	cpe:2.3:a:postgresql:postgresql:9.2.14:::::::*
postgresql	postgresql	9.2.15	cpe:2.3:a:postgresql:postgresql:9.2.15:::::::*
postgresql	postgresql	9.2.16	cpe:2.3:a:postgresql:postgresql:9.2.16:::::::*
postgresql	postgresql	9.2.17	cpe:2.3:a:postgresql:postgresql:9.2.17:::::::*
postgresql	postgresql	9.2.18	cpe:2.3:a:postgresql:postgresql:9.2.18:::::::*
postgresql	postgresql	9.2.19	cpe:2.3:a:postgresql:postgresql:9.2.19:::::::*
postgresql	postgresql	9.2.20	cpe:2.3:a:postgresql:postgresql:9.2.20:::::::*
postgresql	postgresql	9.2.21	cpe:2.3:a:postgresql:postgresql:9.2.21:::::::*
postgresql	postgresql	9.3	cpe:2.3:a:postgresql:postgresql:9.3:::::::*
postgresql	postgresql	9.3.1	cpe:2.3:a:postgresql:postgresql:9.3.1:::::::*
postgresql	postgresql	9.3.2	cpe:2.3:a:postgresql:postgresql:9.3.2:::::::*
postgresql	postgresql	9.3.3	cpe:2.3:a:postgresql:postgresql:9.3.3:::::::*
postgresql	postgresql	9.3.4	cpe:2.3:a:postgresql:postgresql:9.3.4:::::::*
postgresql	postgresql	9.3.5	cpe:2.3:a:postgresql:postgresql:9.3.5:::::::*
postgresql	postgresql	9.3.6	cpe:2.3:a:postgresql:postgresql:9.3.6:::::::*
postgresql	postgresql	9.3.7	cpe:2.3:a:postgresql:postgresql:9.3.7:::::::*
postgresql	postgresql	9.3.8	cpe:2.3:a:postgresql:postgresql:9.3.8:::::::*
postgresql	postgresql	9.3.9	cpe:2.3:a:postgresql:postgresql:9.3.9:::::::*
postgresql	postgresql	9.3.10	cpe:2.3:a:postgresql:postgresql:9.3.10:::::::*
postgresql	postgresql	9.3.11	cpe:2.3:a:postgresql:postgresql:9.3.11:::::::*
postgresql	postgresql	9.3.12	cpe:2.3:a:postgresql:postgresql:9.3.12:::::::*
postgresql	postgresql	9.3.13	cpe:2.3:a:postgresql:postgresql:9.3.13:::::::*
postgresql	postgresql	9.3.14	cpe:2.3:a:postgresql:postgresql:9.3.14:::::::*
postgresql	postgresql	9.3.15	cpe:2.3:a:postgresql:postgresql:9.3.15:::::::*
postgresql	postgresql	9.3.16	cpe:2.3:a:postgresql:postgresql:9.3.16:::::::*
postgresql	postgresql	9.3.17	cpe:2.3:a:postgresql:postgresql:9.3.17:::::::*
postgresql	postgresql	9.4	cpe:2.3:a:postgresql:postgresql:9.4:::::::*
postgresql	postgresql	9.4.1	cpe:2.3:a:postgresql:postgresql:9.4.1:::::::*
postgresql	postgresql	9.4.2	cpe:2.3:a:postgresql:postgresql:9.4.2:::::::*
postgresql	postgresql	9.4.3	cpe:2.3:a:postgresql:postgresql:9.4.3:::::::*
postgresql	postgresql	9.4.4	cpe:2.3:a:postgresql:postgresql:9.4.4:::::::*
postgresql	postgresql	9.4.5	cpe:2.3:a:postgresql:postgresql:9.4.5:::::::*
postgresql	postgresql	9.4.6	cpe:2.3:a:postgresql:postgresql:9.4.6:::::::*
postgresql	postgresql	9.4.7	cpe:2.3:a:postgresql:postgresql:9.4.7:::::::*
postgresql	postgresql	9.4.8	cpe:2.3:a:postgresql:postgresql:9.4.8:::::::*
postgresql	postgresql	9.4.9	cpe:2.3:a:postgresql:postgresql:9.4.9:::::::*
postgresql	postgresql	9.4.10	cpe:2.3:a:postgresql:postgresql:9.4.10:::::::*
postgresql	postgresql	9.4.11	cpe:2.3:a:postgresql:postgresql:9.4.11:::::::*
postgresql	postgresql	9.4.12	cpe:2.3:a:postgresql:postgresql:9.4.12:::::::*
postgresql	postgresql	9.5	cpe:2.3:a:postgresql:postgresql:9.5:::::::*
postgresql	postgresql	9.5.1	cpe:2.3:a:postgresql:postgresql:9.5.1:::::::*
postgresql	postgresql	9.5.2	cpe:2.3:a:postgresql:postgresql:9.5.2:::::::*
postgresql	postgresql	9.5.3	cpe:2.3:a:postgresql:postgresql:9.5.3:::::::*
postgresql	postgresql	9.5.4	cpe:2.3:a:postgresql:postgresql:9.5.4:::::::*
postgresql	postgresql	9.5.5	cpe:2.3:a:postgresql:postgresql:9.5.5:::::::*
postgresql	postgresql	9.5.6	cpe:2.3:a:postgresql:postgresql:9.5.6:::::::*
postgresql	postgresql	9.5.7	cpe:2.3:a:postgresql:postgresql:9.5.7:::::::*
postgresql	postgresql	9.6	cpe:2.3:a:postgresql:postgresql:9.6:::::::*
postgresql	postgresql	9.6.1	cpe:2.3:a:postgresql:postgresql:9.6.1:::::::*
postgresql	postgresql	9.6.2	cpe:2.3:a:postgresql:postgresql:9.6.2:::::::*
postgresql	postgresql	9.6.3	cpe:2.3:a:postgresql:postgresql:9.6.3:::::::*
debian	debian_linux	9.0	cpe:2.3:o:debian:debian_linux:9.0:::::::*

References for CVE-2017-7546

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

URL

CVE-2017-7546

Exploit prediction scoring system (EPSS) score for CVE-2017-7546

Common vulnerability scoring system (CVSS) metrics for CVE-2017-7546

Weakness enumeration for CVE-2017-7546

OS Trackers for CVE-2017-7546

Affected software / configurations for CVE-2017-7546

References for CVE-2017-7546