How severe is CVE-2015-7750?

CVE-2015-7750 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2015-7750 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-7750?

CVE-2015-7750 primarily affects Juniper Screenos. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-7750?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2015-7750 published?

CVE-2015-7750 was published on 2015-10-19 and last updated on 2026-06-17.

CVE-2015-7750

CVE-2015-7750 is a medium-severity vulnerability in Juniper Screenos with a CVSS 2.0 base score of 5.0. 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: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Juniper Screenos
Published: 2015-10-19
Last modified: 2026-06-17

Description

The L2TP packet processing functionality in Juniper Netscreen and ScreenOS Firewall products with ScreenOS before 6.3.0r13-dnd1, 6.3.0r14 through 6.3.0r18 before 6.3.0r18-dnc1, and 6.3.0r19 allows remote attackers to cause a denial of service via a crafted L2TP packet.

Frequently asked questions

What is CVE-2015-7750?: The L2TP packet processing functionality in Juniper Netscreen and ScreenOS Firewall products with ScreenOS before 6.3.0r13-dnd1, 6.3.0r14 through 6.3.0r18 before 6.3.0r18-dnc1, and 6.3.0r19 allows remote attackers to cause a denial of service via a crafted L2TP packet.
How severe is CVE-2015-7750?: CVE-2015-7750 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2015-7750 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-7750?: CVE-2015-7750 primarily affects Juniper Screenos. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-7750?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-7750 published?: CVE-2015-7750 was published on 2015-10-19 and last updated on 2026-06-17.

References

Affected products (8)

cpe:2.3:o:juniper:screenos:*:r12:*:*:*:*:*:*
cpe:2.3:o:juniper:screenos:6.3.0:*:*:*:*:*:*:*
cpe:2.3:o:juniper:screenos:6.3.0:r14:*:*:*:*:*:*
cpe:2.3:o:juniper:screenos:6.3.0:r15:*:*:*:*:*:*
cpe:2.3:o:juniper:screenos:6.3.0:r16:*:*:*:*:*:*
cpe:2.3:o:juniper:screenos:6.3.0:r17:*:*:*:*:*:*
cpe:2.3:o:juniper:screenos:6.3.0:r18:*:*:*:*:*:*
cpe:2.3:o:juniper:screenos:6.3.0:r19:*:*:*:*:*:*

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…
CVE-2017-2336 — Critical (CVSS 9.6): A reflected cross site scripting vulnerability in NetScreen WebUI of Juniper Networks Juniper NetScreen Firewall+VPN…
CVE-2017-2339 — High (CVSS 8.4): A persistent cross site scripting vulnerability in NetScreen WebUI of Juniper Networks Juniper NetScreen Firewall+VPN…
CVE-2017-2338 — High (CVSS 8.4): A persistent cross site scripting vulnerability in NetScreen WebUI of Juniper Networks Juniper NetScreen Firewall+VPN…
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…

All CVEs affecting Juniper Screenos →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →