How severe is CVE-2018-0005?

CVE-2018-0005 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-0005 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-0005?

CVE-2018-0005 primarily affects Juniper Junos. In total, 24 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-0005?

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-2018-0005 published?

CVE-2018-0005 was published on 2018-01-10 and last updated on 2026-06-17.

CVE-2018-0005

CVE-2018-0005 is a high-severity vulnerability in Juniper Junos with a CVSS 3.x base score of 7.4. 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-754.

Key facts

Severity: High (CVSS 3.x base score 7.4)
CVSS v2: 5.8
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-754
Affected product: Juniper Junos
Published: 2018-01-10
Last modified: 2026-06-17

Description

QFX and EX Series switches configured to drop traffic when the MAC move limit is exceeded will forward traffic instead of dropping traffic. This can lead to denials of services or other unintended conditions. Affected releases are Juniper Networks Junos OS: 14.1X53 versions prior to 14.1X53-D40; 15.1X53 versions prior to 15.1X53-D55; 15.1 versions prior to 15.1R7.

Frequently asked questions

What is CVE-2018-0005?: QFX and EX Series switches configured to drop traffic when the MAC move limit is exceeded will forward traffic instead of dropping traffic. This can lead to denials of services or other unintended conditions. Affected releases are Juniper Networks Junos OS: 14.1X53 versions prior to 14.1X53-D40; 15.1X53 versions prior to 15.1X53-D55; 15.1 versions prior to 15.1R7.
How severe is CVE-2018-0005?: CVE-2018-0005 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-0005 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-0005?: CVE-2018-0005 primarily affects Juniper Junos. In total, 24 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-0005?: 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-2018-0005 published?: CVE-2018-0005 was published on 2018-01-10 and last updated on 2026-06-17.

References

Affected products (24)

cpe:2.3:o:juniper:junos:14.1x53:*:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:14.1x53:d10:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:14.1x53:d15:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:14.1x53:d16:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:14.1x53:d25:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:14.1x53:d26:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:14.1x53:d27:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:14.1x53:d30:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:14.1x53:d35:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1:r3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1:r4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1:r5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1:r6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1x53:d20:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1x53:d21:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1x53:d30:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1x53:d32:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1x53:d33:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1x53:d34:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1x53:d50:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1x53:d51:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:15.1x53:d52:*:*:*:*:*:*

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