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CVE-2026-57026General(juniper / junos)

LOWCVSS 8.7 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

An Improper Validation of Syntactic Correctness of Input vulnerability in the SIP plugin of Juniper Networks Junos OS on MX Series with SPC3 and SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).If the SIP ALG is enabled on an affected device, the processing of a malformed SIP invite packet will cause a flow processing daemon (flowd) crash and restart. This leads to a complete service outage until the system has automatically recovered. This issue affects Junos OS on MX Series with SPC3 and SRX Series: * all versions before 23.2R2-S7, * 23.4 versions before 23.4R2-S8, * 24.2 versions before 24.2R2-S5, * 24.4 versions before 24.4R2-S4, * 25.2 versions before 25.2R2, * 25.4 versions before 25.4R1-S2.

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0.5/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-1286

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Are you affected?

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

  • junos
  • mx-spc3
  • mx240
  • mx480

Threat summary

  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • General: 1 classified signal
  • Disclosure: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-07-10); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
juniper
Products
junosmx-spc3mx240mx480mx960srx1500srx1600srx2300srx300srx320

7 versions affected across 24 products

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-07-10: 1Mentions · 2026-07-21: 107-1007-21
Signal classification2 categories
General
150.0%
Disclosure
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-07-101
General1
2026-07-211
Disclosure1
Full discourse2 posts
  • CERT-PY@CERTpy
    Disclosure

    ⚠️ Vulnerabilidades en productos Juniper ❗ CVE-2026-57026 ❗ CVE-2026-57023 ❗ CVE-2026-33794 ➡️ Más info: https://www.cert.gov.py/vulnerabilidades-en-productos-juniper-3/ https://t.co/FGoA3a9rSG

    Post summary

    The post announces three new CVEs that affect Juniper products, providing links for further information but offering no details on exploitation, fixes, or technical aspects.

    00010212
    6.7K followersView on X
  • VulDB 🛡@vuldb
    General

    The severity is increased for this new vulnerability affecting Juniper Junos OS (CVE-2026-57026) https://vuldb.com/vuln/377339

    Post summary

    The post announces an increased severity rating for the new Juniper Junos OS CVE-2026-57026 without providing technical details, PoC, or exploitation information.

    00000222
    2.3K followersView on X
CPE platform detail71 entries

71 of 71 entries

PartVendorProductVersionTarget SWTarget HW
OSjuniperjunos---
OSjuniperjunos23.2--
OSjuniperjunos23.2--
OSjuniperjunos23.2--
OSjuniperjunos23.2--
OSjuniperjunos23.2--
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OSjuniperjunos23.2--
OSjuniperjunos23.2--
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OSjuniperjunos23.4--
OSjuniperjunos23.4--
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OSjuniperjunos23.4--
OSjuniperjunos24.2--
OSjuniperjunos24.2--
OSjuniperjunos24.2--
OSjuniperjunos24.2--
OSjuniperjunos24.2--
OSjuniperjunos24.2--
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OSjuniperjunos24.2--
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OSjuniperjunos24.4--
OSjuniperjunos24.4--
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OSjuniperjunos24.4--
OSjuniperjunos25.2--
OSjuniperjunos25.2--
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OSjuniperjunos25.2--
OSjuniperjunos25.4--
OSjuniperjunos25.4--
OSjuniperjunos25.4--
HWjunipermx-spc3---
HWjunipermx240---
HWjunipermx480---
HWjunipermx960---
HWjunipersrx1500---
HWjunipersrx1600---
HWjunipersrx2300---
HWjunipersrx300---
HWjunipersrx320---
HWjunipersrx340---
HWjunipersrx345---
HWjunipersrx380---
HWjunipersrx400---
HWjunipersrx4100---
HWjunipersrx4120---
HWjunipersrx4200---
HWjunipersrx4300---
HWjunipersrx440---
HWjunipersrx4600---
HWjunipersrx4700---
HWjunipersrx5400---
HWjunipersrx5600---
HWjunipersrx5800---

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