Juniper Junos OS up to 24.2R1 Flow Processing Daemon unusual condition

CVSS Meta Temp Score
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CTI Interest Score
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7.3$0-$5k1.14

Summaryinfo

A vulnerability has been found in Juniper Junos OS up to 24.2R1 and classified as critical. Affected by this vulnerability is an unknown functionality of the component Flow Processing Daemon. The manipulation leads to unusual condition. This vulnerability is documented as CVE-2025-52981. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Juniper Junos OS up to 24.2R1. It has been rated as critical. This issue affects an unknown part of the component Flow Processing Daemon. The manipulation with an unknown input leads to a unusual condition vulnerability. Using CWE to declare the problem leads to CWE-754. The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product. Impacted is availability. The summary by CVE is:

An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX1600, SRX2300, SRX 4000 Series, and SRX5000 Series with SPC3 allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). If a sequence of specific PIM packets is received, this will cause a flowd crash and restart. This issue affects Junos OS: * all versions before 21.2R3-S9, * 21.4 versions before 21.4R3-S11, * 22.2 versions before 22.2R3-S7, * 22.4 versions before 22.4R3-S6, * 23.2 versions before 23.2R2-S4, * 23.4 versions before 23.4R2-S4, * 24.2 versions before 24.2R2. This is a similar, but different vulnerability than the issue reported as CVE-2024-47503, published in JSA88133.

It is possible to read the advisory at supportportal.juniper.net. The identification of this vulnerability is CVE-2025-52981 since 06/23/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/17/2026).

The vulnerability scanner Nessus provides a plugin with the ID 299304 (Juniper Junos OS Vulnerability (JSA100087)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 21.2R3-S9, 21.4R3-S11, 22.2R3-S7, 22.4R3-S6, 23.2R2-S4, 23.4R2-S4 or 24.2R2 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (299304) and CERT Bund (WID-SEC-2025-1519). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Juniper MX Series
  • Juniper JUNOS
  • Juniper SRX Series
  • Juniper Security Director
  • Juniper Junos Space

Productinfo

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (juniper): 🔒

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Unusual condition
CWE: CWE-754
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 299304
Nessus Name: Juniper Junos OS Vulnerability (JSA100087)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Junos OS 21.2R3-S9/21.4R3-S11/22.2R3-S7/22.4R3-S6/23.2R2-S4/23.4R2-S4/24.2R2

Timelineinfo

06/23/2025 CVE reserved
07/11/2025 +18 days Advisory disclosed
07/11/2025 +0 days VulDB entry created
02/17/2026 +221 days VulDB entry last update

Sourcesinfo

Vendor: juniper.net

Advisory: JSA100087
Status: Confirmed

CVE: CVE-2025-52981 (🔒)
GCVE (CVE): GCVE-0-2025-52981
GCVE (VulDB): GCVE-100-316151
CERT Bund: WID-SEC-2025-1519 - Juniper JUNOS: Mehrere Schwachstellen ermöglichen Privilegieneskalation

Entryinfo

Created: 07/11/2025 20:20
Updated: 02/17/2026 20:39
Changes: 07/11/2025 20:20 (80), 10/12/2025 04:18 (7), 01/24/2026 07:56 (1), 02/17/2026 20:39 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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