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Vulnerability record · CVE-2014-3817 · published 11 July 2014

CVE-2014-3817: Juniper junos improper input validation vulnerability

Juniper · Junos

Juniper Junos 11.4 before 11.4R12, 12.1X44 before 12.1X44-D32, 12.1X45 before 12.1X45-D25, 12.1X46 before 12.1X46-D20, and 12.1X47 before 12.1X47-D10 on SRX Series devices, when NAT protocol translation from IPv4 to IPv6 is enabled, allows remote attackers to cause a denial of service (flowd hang or crash) via a crafted packet.

7.8 CVSS 2.0 High EPSS 3.4% · top 11.7% CWE-20 · Improper input validation
7.8CVSS 2.0 base score
3.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
13Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

Juniper Junos 11.4 before 11.4R12, 12.1X44 before 12.1X44-D32, 12.1X45 before 12.1X45-D25, 12.1X46 before 12.1X46-D20, and 12.1X47 before 12.1X47-D10 on SRX Series devices, when NAT protocol translation from IPv4 to IPv6 is enabled, allows remote attackers to cause a denial of service (flowd hang or crash) via a crafted packet.

AV:N/AC:L/Au:N/C:N/I:N/A:C

Affected products

13 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://secunia.com/advisories/59136
http://www.securityfocus.com/bid/68545
http://www.securitytracker.com/id/1030558
https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10635 Vendor Advisory
http://secunia.com/advisories/59136
http://www.securityfocus.com/bid/68545
http://www.securitytracker.com/id/1030558
https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10635 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-36845Juniper Junos OS J-Web PHP variable modification RCEJ-Web in Junos OS on EX Series and SRX Series mishandles the PHP PHPRC environment variable, letting a crafted request alter the PHP execution enviro…KEVEPSS 95%analysed9.8CVE-2020-1631Juniper Junos OS J-Web HTTP service path traversal and local file inclusionThe HTTP/HTTPS service behind J-Web, Web Authentication, Dynamic-VPN, Firewall Authentication Pass-Through with Web-Redirect, and ZTP in Junos OS doe…KEVEPSS 4.8%analysed6.7CVE-2025-21590Juniper Junos OS kernel improper isolation allows local code injectionJunos OS contains an improper isolation or compartmentalization flaw in the kernel that lets a local attacker with shell access inject arbitrary code…KEVEPSS 1.7%analysed5.3CVE-2023-36851Juniper Junos OS SRX J-Web missing authentication allows file upload/downloadJunos OS on SRX Series exposes webauth_operation.php without authentication, letting a network attacker upload and download arbitrary files through J…KEVEPSS 1.1%analysed5.3CVE-2023-36844Juniper Junos OS EX Series J-Web PHP Environment Variable ModificationJ-Web on Junos OS for EX Series fails to properly restrict external PHP variable modification, letting an unauthenticated network attacker alter impo…KEVEPSS 90%analysed5.3CVE-2023-36847Juniper Junos OS EX Series J-Web installAppPackage.php missing authenticationJunos OS on EX Series exposes installAppPackage.php through J-Web without requiring authentication. An unauthenticated network attacker can upload ar…KEVEPSS 83%analysed5.3CVE-2023-36846Juniper Junos OS SRX J-Web Missing Authentication Allows File UploadJunos OS on SRX Series fails to require authentication for a critical function in user.php reachable through J-Web, letting an unauthenticated networ…KEVEPSS 93%analysed10.0CVE-2021-31384Juniper junos improper authorization vulnerabilityDue to a Missing Authorization weakness and Insufficient Granularity of Access Control in a specific device configuration, a vulnerability exists in …EPSS 1.2%

Source: NIST National Vulnerability Database (record CVE-2014-3817), CISA KEV, FIRST EPSS (scores of 2026-09-30). This page is refreshed as NVD updates the record.