CVE-2023-39321

highpriority · track · 30EPSS 0.013 · 71 %ileDEEURUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
1.34% (71st) EPSS
CVSS 7.5 · high
Is it mine?
27 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · osv

EPSS · scored 2026-10-27

Processing an incomplete post-handshake message for a QUIC connection can cause a panic.

01

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
v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU
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)
02

ssvc

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

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-400USCWE-400US
04

affected products (27)

Products and version ranges known to be affected.

showing 20 of 27
05

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-2023-39321Panic when processing post-handshake message on QUIC connections in crypto/tls2024-03-06vendor · osvUS

    Processing an incomplete post-handshake message for a QUIC connection can cause a panic.

  • GO-2023-2044Panic when processing post-handshake message on QUIC connections in crypto/tls2023-09-07vendor · osvUS

    Processing an incomplete post-handshake message for a QUIC connection can cause a panic.

06

also known as (6)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bduosvcert_bundNVDCVE.orgMITRE
published 2023-09-08modified 2026-06-17
08

references (21)

External citations — patches, advisories, analysis.

scry

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