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CVE-2015-7755

Improper Authentication — is CVE-2015-7755real, exploitable, or a false positive? Here's the community ground truth.

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Critical · CVSS 9.8EPSS 61.4%CISA KEVCWE-287 · Improper Authentication

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

References

NVD MITRE CVE.org CISA KEV

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Community ground truth

Community verdict

3 verdicts
Not a real issue

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Community real-world severity: Critical (Critical 3) — CVSS base score 9.8

In line with its CVSS base score.

Field notes & remediation

Verdicts are the quick signal — notes are the evidence and fixes behind them.

  • 0
    Field note · Aisha RahmanCurated

    Juniper ScreenOS Improper Authentication Vulnerability — Juniper ScreenOS contains an improper authentication vulnerability that could allow unauthorized remote administrative access to the device. Listed in the CISA KEV catalog (added 2025-10-02) — confirmed exploited in the wild, not theoretical. FIRST EPSS puts the chance of exploitation in the next 30 days at ~61%. Treat it as real and prioritize remediation over triage.

  • 0
    Remediation · Tomáš NovákCurated

    Required action for Juniper ScreenOS: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. CISA set a federal remediation due date of 2025-10-23. After patching, verify the vulnerable path is no longer reachable before closing the finding.

Related CVEs

Same weakness — CWE-287 · Improper Authentication.