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CVE-2020-27338

23
FAUCET Score

CVE-2020-27338 is an improper input validation vulnerability in the Treck IPv6 DHCPv6 client component, affecting Treck IPv6 versions prior to 6.0.1.68. This high-severity vulnerability (CVSS 7.1) allows an unauthenticated, adjacent attacker to trigger an out-of-bounds read, potentially leading to a denial of service. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage, including a CISA advisory.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.0.1.68CPE matchmatch criteria
cpe:2.3:a:treck:ipv6:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.6
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.80%
Probability of exploitation in next 30 days
EPSS Percentile
52.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0080 is in the 61st percentile among its peer group of 1,859 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

security.netapp.com / advisory/ntap-20210201-0003
Third Party Advisory
treck.com / vulnerability-response-information
Vendor Advisory