CVE-2023-39322

highpriority · track · 30EPSS 0.013 · 71 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.34% (71st) EPSS

CVSS 7.5 · high

Is it mine?

25 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · osv · cert_bund

EPSS · scored 2026-10-27

QUIC connections do not set an upper bound on the amount of data buffered when reading post-handshake messages, allowing a malicious QUIC connection to cause unbounded memory growth. With fix, connections now consistently reject messages larger than 65KiB in size.

cvss

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

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

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

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-770USprimary

affected products (25)

Products and version ranges known to be affected.

Fedora Linuxall versionscert_bundDEcpe:/o:fedoraproject:fedora:-
Gentoo Linuxall versionscert_bundDEcpe:/o:gentoo:linux:-
Golang Go <1.20.8all versionscert_bundDE
Golang Go <1.21.1all versionscert_bundDE
IBM Spectrum Protect Plus <10.1.16.2all versionscert_bundDE
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
Red Hat OpenStack 16.2all versionscert_bundDEcpe:/a:redhat:openstack:16.2
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Splunk Splunk Enterprise <9.1.6all versionscert_bundDE
Splunk Splunk Enterprise <9.2.3all versionscert_bundDE
Splunk Splunk Enterprise <9.3.1all versionscert_bundDE
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
Xerox FreeFlow Print Server v7all versionscert_bundDEcpe:/a:xerox:freeflow_print_server:v7
Xerox FreeFlow Print Server v9all versionscert_bundDEcpe:/a:xerox:freeflow_print_server:v9
IBM Spectrum Protect Plus< 10.1.16.2cert_bundDE
Splunk Splunk Enterprise< 9.1.6cert_bundDE
Splunk Splunk Enterprise< 9.2.3cert_bundDE
Splunk Splunk Enterprise< 9.3.1cert_bundDE
golang Go< 1.20.8cert_bundDE

showing 20 of 25

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-2280Golang Go: Mehrere SchwachstellenDeutsch2023-09-06csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Golang Go ausnutzen, um einen Cross-Site Scripting Angriff durchzuführen, Code auszuführen oder einen Denial of Service zu verursachen.
BIT-golang-2023-39322Memory exhaustion in QUIC connection handling in crypto/tls2024-03-06vendor · osvUS
QUIC connections do not set an upper bound on the amount of data buffered when reading post-handshake messages, allowing a malicious QUIC connection to cause unbounded memory growth. With fix, connections now consistently reject messages larger than 65KiB in size.
GO-2023-2045Memory exhaustion in QUIC connection handling in crypto/tls2023-09-07vendor · osvUS
QUIC connections do not set an upper bound on the amount of data buffered when reading post-handshake messages, allowing a malicious QUIC connection to cause unbounded memory growth. With fix, connections now consistently reject messages larger than 65KiB in size.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv cert_bund NVD CVE.org MITRE

published 2023-09-08modified 2026-06-17

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+3259 more

references (21)

External citations — patches, advisories, analysis.

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