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CVE-2015-7755 is an authentication backdoor introduced through unauthorized code in Juniper ScreenOS on NetScreen firewalls. A hardcoded password bypasses SSH and Telnet authentication, permitting an interactive shell with the highest privileges. Any username can be supplied, including nonexistent accounts. Reverse engineering identified a password comparison associated with auth_admin_internal that was removed in patched firmware. Juniper subsequently confirmed that the authentication backdoor affects ScreenOS 6.3.0r17 through 6.3.0r20, narrowing earlier affected-version listings that included ScreenOS 6.2.0 and additional 6.3.0 releases. The separate VPN-decryption vulnerability is tracked as CVE-2015-7756.
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No valid public exploits. Mallory filtered out 2 candidates as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
17 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Juniper ScreenOS administrative backdoor vulnerability allowing unauthorized remote access, mentioned as historical context.
An improper authentication vulnerability in Juniper ScreenOS that allows attackers to gain administrative access via TELNET or SSH using an unspecified password.
An improper authentication vulnerability in Juniper ScreenOS allows unauthorized remote administrative access.
Improper authentication vulnerability in Juniper ScreenOS, allowing administrative access via SSH/TELNET. Actively exploited with critical impact.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.