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CVE-2020-1672

19
FAUCET Score

CVE-2020-1672 is a Denial of Service (DoS) vulnerability affecting Juniper Networks Junos OS devices with DHCPv6 relay enabled. A specially crafted DHCPv6 packet can crash the jdhcpd daemon, which, if continuously received, leads to an extended DoS condition. This vulnerability has a CVSS score of 7.5 (High), indicating it can be exploited remotely with low attack complexity, resulting in a complete loss of availability. There is currently no public exploit code available, nor is there evidence of active exploitation or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
17.3CPE matchmatch criteria
cpe:2.3:o:juniper:junos:17.3:-:*:*:*:*:*:*
17.3CPE matchmatch criteria
cpe:2.3:o:juniper:junos:17.3:r1-s1:*:*:*:*:*:*
17.3CPE matchmatch criteria
cpe:2.3:o:juniper:junos:17.3:r2:*:*:*:*:*:*
17.3CPE matchmatch criteria
cpe:2.3:o:juniper:junos:17.3:r2-s1:*:*:*:*:*:*
17.3CPE matchmatch criteria
cpe:2.3:o:juniper:junos:17.3:r2-s2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.04%
Probability of exploitation in next 30 days
EPSS Percentile
60.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0104 is in the 37th percentile among its peer group of 51,553 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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 / JSA11069
Vendor Advisory