CVE-2023-22415

highpriority · track · 0EPSS 0.008 · 56 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.79% (56th) EPSS

CVSS 7.5 · high

Is it mine?

37 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 the H.323 ALG of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service (DoS). On all MX Series and SRX Series platform, when H.323 ALG is enabled and specific H.323 packets are received simultaneously, a flow processing daemon (flowd) crash will occur. Continued receipt of these specific packets will cause a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS on MX Series and SRX Series All versions prior to 19.4R3-S10; 20.2 versions prior to 20.2R3-S6; 20.3 versions prior to 20.3R3-S6; 20.4 versions prior to 20.4R3-S5; 21.1 versions prior to 21.1R3-S4; 21.2 versions prior to 21.2R3-S3; 21.3 versions prior to 21.3R3-S3; 21.4 versions prior to 21.4R3; 22.1 versions prior to 22.1R2-S1, 22.1R3; 22.2 versions prior to 22.2R1-S2, 22.2R2.

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.

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

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-787USprimaryCWE-787US

affected products (37)

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 OS20.2 → 20.2R3-S6enisa_euvdEU
Juniper Networks Junos OS20.3 → 20.3R3-S6enisa_euvdEU
Juniper Networks Junos OS20.4 → 20.4R3-S5enisa_euvdEU
Juniper Networks Junos OS21.1 → 21.1R3-S4enisa_euvdEU
Juniper Networks Junos OS21.2 → 21.2R3-S3enisa_euvdEU
Juniper Networks Junos OS21.3 → 21.3R3-S3enisa_euvdEU
Juniper Networks Junos OS21.4 → 21.4R3enisa_euvdEU
Juniper Networks Junos OS22.1 → 22.1R2-S1, 22.1R3enisa_euvdEU
Juniper Networks Junos OS22.2 → 22.2R1-S2, 22.2R2enisa_euvdEU
Juniper Networks Junos OSunspecified → 19.4R3-S10enisa_euvdEU
Juniper Networks Inc. JunOS≤ 19.4R3-S10fstec_bduRU
Juniper Networks Inc. JunOS20.2 → 20.2R3-S6fstec_bduRU
Juniper Networks Inc. JunOS20.3 → 20.3R3-S6fstec_bduRU
Juniper Networks Inc. JunOS20.4 → 20.4R3-S5fstec_bduRU
Juniper Networks Inc. JunOS21.1 → 21.1R3-S4fstec_bduRU
Juniper Networks Inc. JunOS21.2 → 21.2R3-S3fstec_bduRU

showing 20 of 37

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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Related entries.

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+16125 more

references (5)

External citations — patches, advisories, analysis.

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