How severe is CVE-2015-7754?

CVE-2015-7754 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2015-7754 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-7754?

CVE-2015-7754 affects Juniper Screenos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-7754?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2015-7754 published?

CVE-2015-7754 was published on 2016-01-08 and last updated on 2026-06-17.

CVE-2015-7754

CVE-2015-7754 is a high-severity vulnerability in Juniper Screenos with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 9.3
EPSS exploit prediction: 4% (89th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Juniper Screenos
Published: 2016-01-08
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2015-7754?: 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.
How severe is CVE-2015-7754?: CVE-2015-7754 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2015-7754 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-7754?: CVE-2015-7754 affects Juniper Screenos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-7754?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2015-7754 published?: CVE-2015-7754 was published on 2016-01-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:juniper:screenos:*:r20:*:*:*:*:*:*

More vulnerabilities in Juniper Screenos

CVE-2015-7755 — Critical (CVSS 9.8): 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…
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CVE-2017-2339 — High (CVSS 8.4): A persistent cross site scripting vulnerability in NetScreen WebUI of Juniper Networks Juniper NetScreen Firewall+VPN…
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CVE-2017-2337 — High (CVSS 8.4): A persistent cross site scripting vulnerability in NetScreen WebUI of Juniper Networks Juniper NetScreen Firewall+VPN…
CVE-2017-2335 — High (CVSS 8.4): A persistent cross site scripting vulnerability in NetScreen WebUI of Juniper Networks Juniper NetScreen Firewall+VPN…

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