CVE-2026-6477

highpriority · track · 0EPSS 0.005 · 39 %ileDEEUFRNLRUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.45% (39th) EPSS

CVSS 8.8 · high

Is it mine?

66 products

Check your exposure

Who says so?

7 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Use of inherently dangerous function PQfn(..., result_is_int=0, ...) in PostgreSQL libpq lo_export(), lo_read(), lo_lseek64(), and lo_tell64() functions allows the server superuser to overwrite a client stack buffer with an arbitrarily-large response. Like gets(), PQfn(..., result_is_int=0, ...) stores arbitrary-length, server-determined data into a buffer of unspecified size. Because both the \lo_export command in psql and pg_dump call lo_read(), the server superuser can overwrite pg_dump or psql stack memory. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.

cvss

Technical severity, 0–10. One row per scoring source.

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.8highAV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.18.4highCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:Hsecondaryexploitability 1.7 · impact 6

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondaryexploitability 2.8 · impact 5.9

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Hsecondary · NCSC-NL NL

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-120USCWE-121USCWE-242USCWE-242USCWE-242US

affected products (66)

Products and version ranges known to be affected.

Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Splunk Splunk Enterprise< 10.0.9cert_bundDE
Splunk Splunk Enterprise< 10.2.6cert_bundDE
Splunk Splunk Enterprise< 10.4.2cert_bundDE
Splunk Splunk Enterprise< 9.4.14cert_bundDE
Splunk Splunk Splunk Enterprise <10.0.9< 10.0.9cert_bundDE
Splunk Splunk Splunk Enterprise <10.2.6< 10.2.6cert_bundDE
Splunk Splunk Splunk Enterprise <10.4.2< 10.4.2cert_bundDE
Splunk Splunk Splunk Enterprise <9.4.14< 9.4.14cert_bundDE
n/a PostgreSQL0 → 14.23enisa_euvdEU
n/a PostgreSQL15 → 15.18enisa_euvdEU
n/a PostgreSQL16 → 16.14enisa_euvdEU
n/a PostgreSQL17 → 17.10enisa_euvdEU
n/a PostgreSQL18 → 18.4enisa_euvdEU
Novell Inc. SUSE Linux Enterprise Server for SAP Applications≤ 15 SP4fstec_bduRU
Novell Inc. SUSE Linux Enterprise Server for SAP Applications≤ 15 SP7fstec_bduRU
Novell Inc. SUSE Linux Enterprise Server for SAP Applications≤ 15 SP6fstec_bduRU
Novell Inc. SUSE Linux Enterprise Server for SAP Applications≤ 15 SP5fstec_bduRU
Novell Inc. SUSE Manager Proxy≤ LTS 4.3fstec_bduRU
Novell Inc. Suse Linux Enterprise Desktop≤ 15 SP7fstec_bduRU

showing 20 of 66

advisories (7)

Vendor and ecosystem advisories describing this.

NCSC-2026-0321Meerdere kwetsbaarheden verholpen in IBM AIX en IBM PowerVM VIOSNL2026-08-21csaf · ncsc_nlNL
IBM heeft kwetsbaarheden verholpen in AIX en PowerVM VIOS. Ook heeft IBM eerdere kwetsbaarheden in, onder andere, DB2, WebSphere, Oracle producten als Java en GraalVM, PostgreSQL, OpenSSH en Perl verholpen voor de producten geproduceerd voor AIX.
WID-SEC-W-2026-1544PostgreSQL: Mehrere SchwachstellenDeutsch2026-05-14csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in PostgreSQL ausnutzen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Dateien zu manipulieren, um einen SQL-Injection Angriff durchzuführen, und um Sicherheitsvorkehrungen zu umgehen.
WID-SEC-W-2026-2858IBM AIX und VIOS: Mehrere SchwachstellenDeutsch2026-08-16csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in IBM AIX und IBM VIOS ausnutzen, um beliebigen Programmcode auszuführen, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Dateien zu manipulieren, und um Sicherheitsvorkehrungen zu umgehen.
WID-SEC-W-2026-2929Splunk Splunk Enterprise: Mehrere SchwachstellenDeutsch2026-08-19csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Splunk Splunk Enterprise ausnutzen, um beliebigen Code auszuführen, Berechtigungen zu erweitern, Sicherheitsmaßnahmen zu umgehen, SQL-Injection-, serverseitige Request-Forgery- und Cross-Site-Scripting-Angriffe durchzuführen, sensible Informationen offenzulegen oder zu manipulieren, Denial-of-Service-Zustände auszulösen oder andere, nicht näher spezifizierte Angriffe durchzuführen.
BIT-postgresql-2026-6477PostgreSQL libpq lo_* functions let server superuser overwrite client stack memory2026-05-18vendor · osvUS
Use of inherently dangerous function PQfn(..., result_is_int=0, ...) in PostgreSQL libpq lo_export(), lo_read(), lo_lseek64(), and lo_tell64() functions allows the server superuser to overwrite a client stack buffer with an arbitrarily-large response. Like gets(), PQfn(..., result_is_int=0, ...) stores arbitrary-length, server-determined data into a buffer of unspecified size. Because both the \lo_export command in psql and pg_dump call lo_read(), the server superuser can overwrite pg_dump or psql stack memory. Versions before PostgreSQL 18.4, 17.10, 16.14, 15.18, and 14.23 are affected.
CERTFR-2026-AVI-1366Multiples vulnérabilités dans les produits SplunkFrançais2026-10-22vendor · certfrFR
CERTFR-2026-AVI-1385Multiples vulnérabilités dans les produits VMwareFrançais2026-10-26vendor · certfrFR

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund ncsc_nl osv certfr NVD CVE.org MITRE

published 2026-05-14modified 2026-08-25

references (50)

External citations — patches, advisories, analysis.

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