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CVE-2018-0056

19
FAUCET Score

CVE-2018-0056 describes a vulnerability in Juniper Networks Junos OS on MX Series devices configured with l2-backhaul VPN. The Layer 2 Address Learning Daemon (L2ALD) can crash when attempting to delete a duplicate MAC address entry that is not found in the internal MAC address table. This medium-severity vulnerability (CVSS 5.3) has an adjacent attack vector and high complexity, potentially leading to a denial of service. There is no known active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
15.1CPE matchmatch criteria
cpe:2.3:o:juniper:junos:15.1:*:*:*:*:*:*:*
15.1CPE matchmatch criteria
cpe:2.3:o:juniper:junos:15.1:f2:*:*:*:*:*:*
15.1CPE matchmatch criteria
cpe:2.3:o:juniper:junos:15.1:f3:*:*:*:*:*:*
15.1CPE matchmatch criteria
cpe:2.3:o:juniper:junos:15.1:f4:*:*:*:*:*:*
15.1CPE matchmatch criteria
cpe:2.3:o:juniper:junos:15.1:f5:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.61%
Probability of exploitation in next 30 days
EPSS Percentile
45.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0061 is in the 92nd percentile among its peer group of 1,749 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.0 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

junipervendor investigatingvia nvd_reference
View patch

References

kb.juniper.net / JSA10890
Vendor Advisory
securitytracker.com / id/1041857
Third Party AdvisoryVDB Entry