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CVE-2020-7666

19
FAUCET Score

CVE-2020-7666 is a path traversal vulnerability impacting all versions of the github.com/u-root/u-root/pkg/cpio package, allowing attackers to manipulate file extraction paths. With a CVSS score of 7.5 (HIGH), this vulnerability is remotely exploitable with low complexity, potentially leading to high integrity impact without requiring user interaction. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:a:u-root:u-root:*:*:*:*:*:*:*:*

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:H/A:N

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

Exploit Intelligence

EPSS Score
1.53%
Probability of exploitation in next 30 days
EPSS Percentile
72.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0153 is in the 54th percentile among its peer group of 51,485 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

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

goGHSA-mq35-x99r-54fchigh

github.com/u-root/u-root/pkg/cpio Arbitrary File Write via Archive Extraction (Zip Slip)

Apr 24, 2024

References

github.com / u-root/u-root/pull/1817
PatchThird Party Advisory
snyk.io / vuln/SNYK-GOLANG-GITHUBCOMUROOTUROOTPKGCPIO-570440
ExploitThird Party Advisory