CVE-2015-7755criticalunder attackCWE-287

CVE-2015-7755

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100Vexday Risk Score

Patch now. It under exploitation confirmed by CISA and has a working public exploit.

ssvc Actcvss 9.8epss 61%
from disclosure to weaponsame day
Published on NVDDec 19
1st PoCDec 18
metasploit+1d
CISA KEV+3575d
Action required by CISAfederal deadline: 2025-10-23

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

In short

Juniper ScreenOS firewalls contain a critical flaw that allows attackers to gain full administrative access by entering a special password during SSH or Telnet connections. This vulnerability puts entire networks at risk because attackers can take complete control of the firewall.

Technical detail

CVE-2015-7755 is an authentication bypass in Juniper ScreenOS affecting versions 6.2.0r15-r18 and 6.3.0 series. Remote attackers can obtain administrative privileges via an undisclosed password during SSH or Telnet sessions (CWE-287: Improper Authentication). The attack requires network access to the management interface and results in complete administrative compromise of the device.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

Juniper ScreenOS 6.2.0r15 through 6.2.0r18, 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 allows remote attackers to obtain administrative access by entering an unspecified password during a (1) SSH or (2) TELNET session.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
n/a · n/a
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