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CVE-2020-1678

18
FAUCET Score

CVE-2020-1678 is a medium-severity memory leak vulnerability affecting Juniper Networks Junos OS and Junos OS Evolved platforms when EVPN is configured. Receipt of specific BGP packets can cause a slow memory leak in the rpd process, potentially leading to a crash if memory is exhausted. This vulnerability has a CVSS score of 6.5, indicating an adjacent network attack vector with low complexity and high impact on availability. There is no evidence of active exploitation, public exploit code, or Metasploit/Nuclei modules available. While there are 2 community mentions and 1 media article, these appear to be misattributions to a different CVE (CVE-2021-1678), suggesting low actual community attention for CVE-2020-1678.

Impacted Technologies

VendorProductVersion(s)CPE
19.4CPE matchmatch criteria
cpe:2.3:o:juniper:junos:19.4:r1:*:*:*:*:*:*
19.4CPE matchmatch criteria
cpe:2.3:o:juniper:junos:19.4:r1-s1:*:*:*:*:*:*
19.4CPE matchmatch criteria
cpe:2.3:o:juniper:junos:19.4:r1-s2:*:*:*:*:*:*
20.1CPE matchmatch criteria
cpe:2.3:o:juniper:junos:20.1:r1:*:*:*:*:*:*
20.1CPE matchmatch criteria
cpe:2.3:o:juniper:junos:20.1:r1-s1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
0.41%
Probability of exploitation in next 30 days
EPSS Percentile
33.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0041 is in the 51st percentile among its peer group of 1,802 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

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 / JSA11075
Vendor Advisory