Juniper Networks Junos OS/Junos OS Evolved cfmd process stack-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.4$5k-$25k0.00

Summaryinfo

A vulnerability categorized as very critical has been discovered in Juniper Networks Junos OS and Junos OS Evolved. The affected element is an unknown function of the component cfmd process. The manipulation results in stack-based overflow. This vulnerability is reported as CVE-2026-102055. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Juniper Networks Junos OS and Junos OS Evolved (affected version unknown). It has been classified as very critical. Affected is an unknown functionality of the component cfmd process. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A Stack-based Buffer Overflow vulnerability in the cfmd process of Juniper Networks Junos OS on MX Series and Junos OS Evolved on PTX Series platforms allows an unauthenticated adjacent-network attacker to execute arbitrary code as root or cause denial of service via a specific CFM Message sent to a configured down-MEP with enhanced CFM mode enabled.

The advisory is available at supportportal.juniper.net. This vulnerability is traded as CVE-2026-102055 since 09/28/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 10/14/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

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: 9.4
VulDB Meta Temp Score: 9.4

VulDB Base Score: 10.0
VulDB Temp Score: 10.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector (juniper): 🔒

CVSSv2info

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

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
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: no mitigation known
Status: 🔍

0-Day Time: 🔒

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-2026-102055 (🔒)
GCVE (CVE): GCVE-0-2026-102055
GCVE (VulDB): GCVE-100-420162

Entryinfo

Created: 10/14/2026 19:30
Changes: 10/14/2026 19:30 (76)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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