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CVE-2017-9450

25
FAUCET Score

CVE-2017-9450 describes a local privilege escalation vulnerability in the AWS CloudFormation bootstrap tools (aws-cfn-bootstrap) package versions prior to 1.4-19.10. An authenticated local attacker can exploit this flaw by creating files in an unspecified directory, leading to arbitrary code execution with root privileges. Rated 7.8 HIGH, this vulnerability has a low attack complexity and can result in high impact to confidentiality, integrity, and 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
< 1.4-19.10CPE matchmatch criteria
cpe:2.3:a:amazon:amazon_web_services_cloudformation_bootstrap:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.38%
Probability of exploitation in next 30 days
EPSS Percentile
30.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0038 is in the 69th percentile among its peer group of 16,994 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

alas.aws.amazon.com / ALAS-2017-861.html
Vendor Advisory
sintonen.fi / advisories/aws-cfn-bootstrap-local-code-execution-as-root.txt
securityfocus.com / bid/99972
Third Party AdvisoryVDB Entry