VulnSocial

CVE-2026-33783Disclosure(juniper / junos_os_evolved)

LOWCVSS 7.1 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch juniper junos_os_evolved systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

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). 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.

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1.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-686

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • junos_os_evolved
  • ptx10001-36mr
  • ptx10002-36qdd
  • ptx10003

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-04-09); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
juniper
Products
junos_os_evolvedptx10001-36mrptx10002-36qddptx10003ptx10004ptx10008ptx10016ptx12008

7 versions affected across 8 products

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-04-09: 1Mentions · 2026-04-14: 1Patch / Workaround · 2026-04-14: 1Technical Details · 2026-04-09: 1Technical Details · 2026-04-14: 104-0904-14
Signal classification2 categories
Disclosure
150.0%
Patch
150.0%
Referenced assets1 URL
By indicator
Classification over time
DateTotalLabels
2026-04-091
Disclosure1
2026-04-141
Patch1
Full discourse2 posts
  • CCB Alert@CCBalert
    Patch

    CVE-2026-33782 & CVE-2026-33783 vulnerabilities in #Juniper Junos OS could allow attackers to trigger a full #DoS. One affects unauthenticated adjacent attackers via memory leak, while the other can be exploited by low-privileged authenticated users. #Patch #Patch #Patch Urgently

    Post summary

    The post flags CVE-2026-33782 and CVE-2026-33783 as DoS risks and urges urgent patching, providing basic vulnerability details but no evidence of exploitation or PoC.

    01000308
    7.2K followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-33783 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, authenti… https://www.cve.org/CVERecord?id=CVE-2026-33783

    Post summary

    A standard CVE disclosure announcing a function call with incorrect argument type vulnerability in Juniper Networks Junos OS Evolved on PTX Series.

    00000144
    57.0K followersView on X
CPE platform detail61 entries

61 of 61 entries

PartVendorProductVersionTarget SWTarget HW
OSjuniperjunos_os_evolved---
OSjuniperjunos_os_evolved22.4--
OSjuniperjunos_os_evolved22.4--
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OSjuniperjunos_os_evolved22.4--
OSjuniperjunos_os_evolved22.4--
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OSjuniperjunos_os_evolved22.4--
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OSjuniperjunos_os_evolved22.4--
OSjuniperjunos_os_evolved23.2--
OSjuniperjunos_os_evolved23.2--
OSjuniperjunos_os_evolved23.2--
OSjuniperjunos_os_evolved23.2--
OSjuniperjunos_os_evolved23.2--
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OSjuniperjunos_os_evolved23.2--
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OSjuniperjunos_os_evolved23.4--
OSjuniperjunos_os_evolved23.4--
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OSjuniperjunos_os_evolved23.4--
OSjuniperjunos_os_evolved23.4--
OSjuniperjunos_os_evolved23.4--
OSjuniperjunos_os_evolved24.2--
OSjuniperjunos_os_evolved24.2--
OSjuniperjunos_os_evolved24.2--
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OSjuniperjunos_os_evolved24.2--
OSjuniperjunos_os_evolved24.4--
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OSjuniperjunos_os_evolved24.4--
OSjuniperjunos_os_evolved24.4--
OSjuniperjunos_os_evolved25.2--
OSjuniperjunos_os_evolved25.2--
OSjuniperjunos_os_evolved25.2--
OSjuniperjunos_os_evolved25.2--
HWjuniperptx10001-36mr---
HWjuniperptx10002-36qdd---
HWjuniperptx10003---
HWjuniperptx10004---
HWjuniperptx10008---
HWjuniperptx10016---
HWjuniperptx12008---

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