Juniper Networks Junos OS Evolved up to 23.4X100 fwstatsd assertion

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.8$0-$5k1.60

Summaryinfo

A vulnerability has been found in Juniper Networks Junos OS Evolved up to 23.4X100 and classified as critical. Affected is an unknown function of the component fwstatsd. This manipulation causes assertion. The identification of this vulnerability is CVE-2026-102023. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Juniper Networks Junos OS Evolved up to 23.4X100. It has been declared as critical. Affected by this vulnerability is an unknown part of the component fwstatsd. The manipulation with an unknown input leads to a assertion vulnerability. The CWE definition for the vulnerability is CWE-617. The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary. As an impact it is known to affect availability. The summary by CVE is:

A Reachable Assertion vulnerability in fwstatsd of Juniper Networks Junos OS Evolved allows an authenticated network attacker to cause a denial of service via an SNMP firewall-counter MIB query when at least one firewall counter is configured.

It is possible to read the advisory at supportportal.juniper.net. This vulnerability is known as CVE-2026-102023 since 09/28/2026. The exploitation appears to be easy. The attack can be launched remotely. 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 10/14/2026).

Upgrading to version 23.2R2-S7.7-EVO, 23.4R2-S8.11-EVO, 24.2R2-S5.6-EVO, 24.4R2-S5-EVO, 25.2R2-S2-EVO, 25.2X100-D35-EVO, 25.4R1-S3-EVO, 25.4X300-D40-EVO or 26.2R1-S2-EVO eliminates this vulnerability.

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

Productinfo

Type

Vendor

Name

Version

License

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: 7.0
VulDB Meta Temp Score: 6.8

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔒
VulDB Reliability: 🔍

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

CVSSv2info

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

Exploitinginfo

Class: Assertion
CWE: CWE-617
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Junos OS Evolved 23.2R2-S7.7-EVO/23.4R2-S8.11-EVO/24.2R2-S5.6-EVO/24.4R2-S5-EVO/25.2R2-S2-EVO/25.2X100-D35-EVO/25.4R1-S3-EVO/25.4X300-D40-EVO/26.2R1-S2-EVO

Timelineinfo

09/28/2026 CVE reserved
10/14/2026 +16 days Advisory disclosed
10/14/2026 +0 days VulDB entry created
10/14/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: supportportal.juniper.net
Status: Confirmed

CVE: CVE-2026-102023 (🔒)
GCVE (CVE): GCVE-0-2026-102023
GCVE (VulDB): GCVE-100-420199

Entryinfo

Created: 10/14/2026 19:44
Changes: 10/14/2026 19:44 (80)
Complete: 🔍
Cache ID: 216::103

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

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