CVE-2023-36833

mediumpriority · track · 0EPSS 0.003 · 24 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.32% (24th) EPSS

CVSS 6.5 · medium

Is it mine?

27 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · cert_bund

EPSS · scored 2026-10-27

A Use After Free vulnerability in the packet forwarding engine (PFE) of Juniper Networks Junos OS Evolved on PTX10001-36MR, and PTX10004, PTX10008, PTX10016 with LC1201/1202 allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS). The process 'aftman-bt' will crash after multiple flaps on a multicast-only fast reroute (MoFRR) enabled interface. This will cause the respective FPC to stop forwarding traffic and it needs to be rebooted to restore the service. An indication that the system experienced this issue is the following log message: <date> <hostname> evo-aftmand-bt[<pid>]: [Error] jexpr_fdb: sanity check failed, ... , app_name L3 Mcast Routes This issue affects Juniper Networks Junos OS Evolved on PTX10001-36MR, PTX10004, PTX10008, PTX10016 with LC1201/1202: 21.2 version 21.2R1-EVO and later versions; 21.3 version 21.3R1-EVO and later versions; 21.4 versions prior to 21.4R3-S3-EVO; 22.1 version 22.1R1-EVO and later versions; 22.2 versions prior to 22.2R3-S2-EVO; 22.3 versions prior to 22.3R3-EVO; 22.4 versions prior to 22.4R1-S2-EVO, 22.4R2-EVO.

cvss

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

6.5

010

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

v3.16.5mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.16.5mediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · sirt@juniper.net USexploitability 2.8 · impact 3.6

v3.16mediumCVSS:3.1/AV:A/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-416US

affected products (27)

Products and version ranges known to be affected.

Juniper JUNOSall versionscert_bundDEcpe:/o:juniper:junos:-
Juniper JUNOS Contrail Cloudall versionscert_bundDEcpe:/o:juniper:junos:contrail_cloud
Juniper JUNOS Evolvedall versionscert_bundDEcpe:/o:juniper:junos:evolved
Juniper JUNOS PTX10001-36MRall versionscert_bundDEcpe:/o:juniper:junos:ptx10001-36mr
Juniper JUNOS PTX10004all versionscert_bundDEcpe:/o:juniper:junos:ptx10004
Juniper JUNOS PTX10008all versionscert_bundDEcpe:/o:juniper:junos:ptx10008
Juniper JUNOS PTX10016all versionscert_bundDEcpe:/o:juniper:junos:ptx10016
Juniper JUNOS Spaceall versionscert_bundDEcpe:/o:juniper:junos:space
Juniper MX Seriesall versionscert_bundDEcpe:/h:juniper:mx:-
Juniper QFX Series QFX10000all versionscert_bundDEcpe:/h:juniper:qfx:qfx10000
Juniper SRX Seriesall versionscert_bundDEcpe:/h:juniper:srx_service_gateways:-
Juniper SRX Series 4600all versionscert_bundDEcpe:/h:juniper:srx_service_gateways:4600
Juniper SRX Series 5000all versionscert_bundDEcpe:/h:juniper:srx_service_gateways:5000
Juniper Networks Junos OS Evolved21.2 → 21.2*enisa_euvdEU
Juniper Networks Junos OS Evolved21.3 → 21.3*enisa_euvdEU
Juniper Networks Junos OS Evolved21.4 → 21.4R3-S3-EVOenisa_euvdEU
Juniper Networks Junos OS Evolved22.1 → 22.1*enisa_euvdEU
Juniper Networks Junos OS Evolved22.2 → 22.2R3-S2-EVOenisa_euvdEU
Juniper Networks Junos OS Evolved22.3 → 22.3R3-EVOenisa_euvdEU
Juniper Networks Junos OS Evolved22.4 → 22.4R1-S2-EVO, 22.4R2-EVOenisa_euvdEU

showing 20 of 27

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-1737Juniper Patchday Juli 2023Deutsch2023-07-12csaf · cert_bundDE
Ein Angreifer aus dem angrenzenden Netzwerk oder ein entfernter anonymer oder lokaler Angreifer kann mehrere Schwachstellen in verschiedenen Juniper Produkten ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand auszulösen und seine Privilegien zu erweitern.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund NVD CVE.org MITRE

published 2023-07-14modified 2026-06-17

references (5)

External citations — patches, advisories, analysis.

scry

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