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CVE-2015-7755 is a critical improper authentication vulnerability in Juniper ScreenOS that permits remote attackers to obtain administrative access to affected devices by supplying a special undocumented password during SSH or TELNET login. The issue was publicly disclosed in December 2015 after Juniper reported unauthorized code in ScreenOS. Affected releases include 6.2.0r15 through 6.2.0r18 and 6.3.0r12 before 6.3.0r12b, 6.3.0r13 before 6.3.0r13b, 6.3.0r14 before 6.3.0r14b, 6.3.0r15 before 6.3.0r15b, 6.3.0r16 before 6.3.0r16b, 6.3.0r17 before 6.3.0r17b, 6.3.0r18 before 6.3.0r18b, 6.3.0r19 before 6.3.0r19b, and 6.3.0r20 before 6.3.0r21. Supporting analysis in the provided content indicates the backdoor logic was present in the SSH and Telnet authentication path and compared supplied credentials against a hardcoded password, enabling bypass of normal authentication checks and resulting in highest-privilege shell access.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
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16 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.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.