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Junos CVE-2025-52980

| EUVDEUVD-2025-21150 HIGH
Use of Incorrect Byte Ordering (CWE-198)
2025-07-11 sirt@juniper.net
7.5
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V16 - Security Logging and Error Handling Use of incorrect byte ordering
Impact

CVSS 7.5. EPSS 0.1%. No patch confirmed.

Exploit ScenarioDerived

An attacker could send specially crafted requests to the affected application to cause resource exhaustion or application crash, disrupting service availability.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 16, 2026

A denial of service vulnerability (CVSS 7.5). High severity vulnerability requiring prompt remediation.

Earlier versions of this analysis (1)
v1 Mar 16, 2026 - 08:18 CVSS 7.5

A Use of Incorrect Byte Ordering vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS on SRX300 Series allows an unauthenticated, network-based attacker to cause a Denial-

RemediationAI

Monitor vendor channels for patch availability.

Affected VersionsENISA

Junos OS 23.4 <23.4R2
Junos OS 22.3 <22.3R3-S3
Junos OS 22.2 <22.2R3-S4
Junos OS 23.2 <23.2R2
Junos OS 22.4 <22.4R3-S2

Affected Packages

euvd junos_os fix: 22.2R3-S4, 22.3R3-S3, 22.4R3-S2, 23.2R2, 23.4R2

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Vulnerability type: denial of service. CVSS 7.5 indicates high severity.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

3
Analysis Updated
Apr 16, 2026 - 06:27 EUVD-patch-fix
executive summary
Patch available
Apr 16, 2026 - 05:29 EUVD
23.4R2,22.3R3-S3,22.2R3-S4
CVE Published
Jul 11, 2025 - 16:15 nvd
HIGH 7.5

DescriptionCVE.org

A Use of Incorrect Byte Ordering

vulnerability

in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS on SRX300 Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).

When a BGP update is received over an established BGP session which contains a specific, valid, optional, transitive path attribute, rpd will crash and restart.

This issue affects eBGP and iBGP over IPv4 and IPv6.

This issue affects:

Junos OS:

  • 22.1 versions from 22.1R1 before 22.2R3-S4,
  • 22.3 versions before 22.3R3-S3,
  • 22.4 versions before 22.4R3-S2,
  • 23.2 versions before 23.2R2,
  • 23.4 versions before 23.4R2.

Executive ViewAI

Why It Matters

CVE-2025-52980 is a high-severity denial of service vulnerability affecting an unspecified product with a CVSS score of 7.5, enabling attackers to disrupt service availability. With a vendor patch already available, organizations should prioritize deployment to restore full service resilience, as the 0.1% EPSS score indicates current exploitation risk remains minimal but the vulnerability's impact on uptime justifies immediate attention.

Business Impact: High
Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score
0.1%
Top 81% exploitable
Data Quality
4 sources
Confidence: Medium

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.1%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
High

Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +38
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

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