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CVE-2026-33783

INDEX BUILT · 2026-09-20

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Junos OS Evolved: PTX Series: If SRTE tunnels provisioned via PCEP are present and specific gRPC queries are received evo-aftmand crashes

CVE-2026-337834 of 4 sources documented this
23

rank 23 = 0 + 16 + 0 + 7 + 0

rank@v1 · backlog

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.00240  ·  without this subject the record ranks 23

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 6.5, from the CNA  ·  without this subject the record ranks 7

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

no persisting rise in 365 days  ·  without this subject the record ranks 23

How much of the world it touches

NVD CPE configurations

7 products in the CPE ranges  ·  without this subject the record ranks 16

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 23

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$7,330over the next 30 days, if this record is yours
Movementno material movementthe record holds only daily drift and scoring model releases
Basisassumeda published average, not your estate

$7,330 = $4.99M incident cost x 0.6121449559255632 exposure x 0.0024 likelihood

udv@v1 · unaudited · wrong for you until you say what you run

$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.

Hindsight · the state

0.0024EPSSNOT IN KEVas of 2026-09-20
Severity6.5 MEDIUMreceipt
Harmpartial impactreceipt
Exploitationnone in held sources
Defensefix version namedreceipt
Movementscoring model changedreceipt
PLATEAU10Minimal movement since 2026-04-10, 66 days at 0.00, as of 2026-06-15. arc-rules@v1

Foresight · where to check next

No weakness class or product neighbourhood is held for this record, so this index cannot name anywhere to check next. That is an absence in the record, not a finding about the software.

Color is a claim, not decoration:the hostile worldthe defenseno signal

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Harm, if it fires from the vector and the weakness

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Reachnetwork-reachable · low privileges required · no user interaction · low attack complexityreceipt
ImpactComplete availability lossreceipt
Scored fromCVSS v3.1 · the CNA's vectorreceipt
Weakness classCWE-686 Function Call With Incorrect Argument Typereceipt
Published consequencesCWE-686: Other: Quality Degradation[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

Fixed in22.4R3-S9-EVO; 23.2R2-S6-EVO; 23.4R2-S7-EVO; 24.2R2-S4-EVO; 24.4R2-S2-EVO; 25.2R1-S2-EVO, 25.2R2-EVOreceipt
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.

Exploit Status & Known PoCs a ladder, not a score

Current rung: Nothing observed in held sources.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA6.5 MEDIUMreceipt
Exploit probability0.0024 · top 85% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byjuniperreceipt
Recorded changes5 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productJuniper Networks Junos OS Evolvedreceipt
Published rangesjuniper junos os evolved < 22.4; juniper junos os evolved 22.4; juniper junos os evolved 23.2; juniper junos os evolved 23.4receipt
Show all 7 published ranges
juniper junos os evolved < 22.4
juniper junos os evolved 22.4
juniper junos os evolved 23.2
juniper junos os evolved 23.4
juniper junos os evolved 24.2
juniper junos os evolved 24.4
juniper junos os evolved 25.2
Fixed in22.4R3-S9-EVO; 23.2R2-S6-EVO; 23.4R2-S7-EVO; 24.2R2-S4-EVO; 24.4R2-S2-EVO; 25.2R1-S2-EVO, 25.2R2-EVOreceipt

A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.

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Attack path

Network requestrequires low privilegesJuniper Networks Junos OS EvolvedCWE-686 weaknessAvailability lossA:Hexploits CWE-686data compromise

What it is stated by the CNA

A Function Call With Incorrect Argument Type vulnerability in the sensor interface of Juniper Networks Junos OS Evolved on PTX Series allows a network-based, authenticated attacker with low privileges to cause a complete Denial of Service (DoS). If colored SRTE policy tunnels are provisioned via PCEP, and gRPC is used to monitor traffic in these tunnels, evo-aftmand crashes and doesn't restart which leads to a complete and persistent service impact. The system has to be manually restarted to recover. The issue is seen only when the Originator ASN field in PCEP contains a value larger than 65,535 (32-bit ASN). receipt

Read the rest of the CNA's description

The issue is not reproducible when SRTE policy tunnels are statically configured. This issue affects Junos OS Evolved on PTX Series:  * all versions before 22.4R3-S9-EVO, * 23.2 versions before 23.2R2-S6-EVO, * 23.4 versions before 23.4R2-S7-EVO, * 24.2 versions before 24.2R2-S4-EVO, * 24.4 versions before 24.4R2-S2-EVO, * 25.2 versions before 25.2R1-S2-EVO, 25.2R2-EVO.

NVD's analysis a second authority

weakness
CWE-686
affected versions
juniper junos os evolved < 22.4; juniper junos os evolved 22.4; juniper junos os evolved 23.2; and 4 more, listed in full below
also scored by
[email protected] 7.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:X/RE:M/U:X · [email protected] 6.5…

check it yourself kb.juniper.net receipt

Movement the material steps

10 Apr 20260.00046
15 Jun 20260.0024 · scoring model v2026.06.15
Show all 5 observations
10 Apr 20260.00046
15 Apr 20260.00051
18 Apr 20260.00054
11 May 20260.00062
15 Jun 20260.0024

5 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt

The full biography

EPSS 0.0024Published2026-04-09Index as of2026-06-15

The record had been public for 2 months when this index was last written.

Published 2026-04-09 receipt · Index as of 2026-06-15 derived

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