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Vulnerability record · CVE-2015-7754 · published 8 January 2016

CVE-2015-7754: Juniper screenos improper input validation vulnerability

Juniper · Screenos

Juniper ScreenOS before 6.3.0r21, when ssh-pka is configured and enabled, allows remote attackers to cause a denial of service (system crash) or execute arbitrary code via crafted SSH negotiation.

8.1 CVSS 3.0 High EPSS 3.9% · top 10.2% CWE-20 · Improper input validation
8.1CVSS 3.0 base score, v2 9.3
3.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

Juniper ScreenOS before 6.3.0r21, when ssh-pka is configured and enabled, allows remote attackers to cause a denial of service (system crash) or execute arbitrary code via crafted SSH negotiation.

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

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

References

LinkTags
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10712 Vendor Advisory
http://www.securityfocus.com/bid/79627
http://www.securitytracker.com/id/1034490
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10712 Vendor Advisory
http://www.securityfocus.com/bid/79627
http://www.securitytracker.com/id/1034490

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Related vulnerabilities

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

9.8CVE-2015-7755Juniper ScreenOS improper authentication grants admin accessJuniper ScreenOS contains an improper authentication flaw (CWE-287) where entering an unspecified password during an SSH or TELNET session grants adm…KEVEPSS 61%analysed7.8CVE-2014-3813Juniper screenos vulnerabilityUnspecified vulnerability in the Juniper Networks NetScreen Firewall products with ScreenOS before 6.3r17, when configured to use the internal DNS lo…EPSS 1.3%7.8CVE-2014-3814Juniper screenos improper input validation vulnerabilityThe Juniper Networks NetScreen Firewall devices with ScreenOS before 6.3r17, when configured to use the internal DNS lookup client, allows remote att…EPSS 1.3%7.8CVE-2014-2842Juniper screenos vulnerabilityJuniper ScreenOS 6.3 and earlier allows remote attackers to cause a denial of service (crash and restart or failover) via a malformed SSL/TLS packet.EPSS 3.5%7.5CVE-2016-1268Juniper screenos improper input validation vulnerabilityThe administrative web services interface in Juniper ScreenOS before 6.3.0r21 allows remote attackers to cause a denial of service (reboot) via a cra…EPSS 1.9%7.1CVE-2013-6958Juniper screenos vulnerabilityJuniper NetScreen Firewall running ScreenOS 5.4, 6.2, or 6.3, when the Ping of Death screen is disabled, allows remote attackers to cause a denial of…EPSS 1.9%6.5CVE-2018-0014Juniper screenos information exposure vulnerabilityJuniper Networks ScreenOS devices do not pad Ethernet packets with zeros, and thus some packets can contain fragments of system memory or data from p…EPSS 0.60%5.4CVE-2017-2337Juniper screenos cross-site scripting vulnerabilityA persistent cross site scripting vulnerability in NetScreen WebUI of Juniper Networks Juniper NetScreen Firewall+VPN running ScreenOS allows a user …EPSS 1.1%

Source: NIST National Vulnerability Database (record CVE-2015-7754), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.