How severe is CVE-2014-3814?

CVE-2014-3814 has a CVSS 2.0 base score of 7.8, rated high severity.

Is CVE-2014-3814 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2014-3814?

CVE-2014-3814 primarily affects Juniper Screenos. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2014-3814?

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-2014-3814 published?

CVE-2014-3814 was published on 2014-06-13 and last updated on 2026-06-17.

CVE-2014-3814

CVE-2014-3814 is a high-severity vulnerability in Juniper Screenos with a CVSS 2.0 base score of 7.8. 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 2.0 base score 7.8)
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Juniper Screenos
Published: 2014-06-13
Last modified: 2026-06-17

Description

The Juniper Networks NetScreen Firewall devices with ScreenOS before 6.3r17, when configured to use the internal DNS lookup client, allows remote attackers to cause a denial of service (crash and reboot) via a sequence of malformed packets to the device IP.

Frequently asked questions

What is CVE-2014-3814?: The Juniper Networks NetScreen Firewall devices with ScreenOS before 6.3r17, when configured to use the internal DNS lookup client, allows remote attackers to cause a denial of service (crash and reboot) via a sequence of malformed packets to the device IP.
How severe is CVE-2014-3814?: CVE-2014-3814 has a CVSS 2.0 base score of 7.8, rated high severity.
Is CVE-2014-3814 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2014-3814?: CVE-2014-3814 primarily affects Juniper Screenos. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2014-3814?: 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-2014-3814 published?: CVE-2014-3814 was published on 2014-06-13 and last updated on 2026-06-17.

References

Affected products (6)

cpe:2.3:o:juniper:screenos:*:*:*:*:*:*:*:*
cpe:2.3:o:juniper:screenos:6.0.0:*:*:*:*:*:*:*
cpe:2.3:o:juniper:screenos:6.1.0:*:*:*:*:*:*:*
cpe:2.3:o:juniper:screenos:6.2.0:*:*:*:*:*:*:*
cpe:2.3:h:juniper:netscreen-5200:-:*:*:*:*:*:*:*
cpe:2.3:h:juniper:netscreen-5400:-:*:*:*:*:*:*:*

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