CVE-2023-22411

highpriority · track · 0EPSS 0.006 · 50 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.63% (50th) EPSS

CVSS 7.5 · high

Is it mine?

34 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

An Out-of-Bounds Write vulnerability in Flow Processing Daemon (flowd) of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service (DoS). On SRX Series devices using Unified Policies with IPv6, when a specific IPv6 packet goes through a dynamic-application filter which will generate an ICMP deny message, the flowd core is observed and the PFE is restarted. This issue affects: Juniper Networks Junos OS on SRX Series: 19.2 versions prior to 19.2R3-S6; 19.3 versions prior to 19.3R3-S6; 19.4 versions prior to 19.4R3-S9; 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S4; 20.4 versions prior to 20.4R3-S3; 21.1 versions prior to 21.1R3; 21.2 versions prior to 21.2R3; 21.3 versions prior to 21.3R2; 21.4 versions prior to 21.4R2.

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

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

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · sirt@juniper.net 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.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-787US

affected products (34)

Products and version ranges known to be affected.

Juniper JUNOSall versionscert_bundDEcpe:/o:juniper:junos:-
Juniper MX Seriesall versionscert_bundDEcpe:/h:juniper:mx:-
Juniper SRX Seriesall versionscert_bundDEcpe:/h:juniper:srx_service_gateways:-
Juniper SRX Series 5000all versionscert_bundDEcpe:/h:juniper:srx_service_gateways:5000
Juniper Networks Junos OS19.2 → 19.2R3-S6enisa_euvdEU
Juniper Networks Junos OS19.3 → 19.3R3-S6enisa_euvdEU
Juniper Networks Junos OS19.4 → 19.4R3-S9enisa_euvdEU
Juniper Networks Junos OS20.2 → 20.2R3-S5enisa_euvdEU
Juniper Networks Junos OS20.3 → 20.3R3-S4enisa_euvdEU
Juniper Networks Junos OS20.4 → 20.4R3-S3enisa_euvdEU
Juniper Networks Junos OS21.1 → 21.1R3enisa_euvdEU
Juniper Networks Junos OS21.2 → 21.2R3enisa_euvdEU
Juniper Networks Junos OS21.3 → 21.3R2enisa_euvdEU
Juniper Networks Junos OS21.4 → 21.4R2enisa_euvdEU
Juniper Networks Inc. JunOS19.2 → 19.2R3-S6fstec_bduRU
Juniper Networks Inc. JunOS19.3 → 19.3R3-S6fstec_bduRU
Juniper Networks Inc. JunOS19.4 → 19.4R3-S9fstec_bduRU
Juniper Networks Inc. JunOS20.2 → 20.2R3-S5fstec_bduRU
Juniper Networks Inc. JunOS20.3 → 20.3R3-S4fstec_bduRU
Juniper Networks Inc. JunOS20.4 → 20.4R3-S3fstec_bduRU

showing 20 of 34

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-0079Juniper JUNOS, SRX Series und MX Series: Schwachstellen ermöglichen Denial of ServiceDeutsch2023-01-11csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Juniper JUNOS, Juniper SRX Series und Juniper MX Series ausnutzen, um einen Denial of Service Angriff durchzuführen.

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund NVD CVE.org MITRE

published 2023-01-13modified 2026-06-17

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+16123 more

references (6)

External citations — patches, advisories, analysis.

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