Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2023-1786

20
FAUCET Score

CVE-2023-1786 describes a sensitive data exposure vulnerability in cloud-init versions prior to 23.1.2, affecting Canonical and Fedora Project distributions. This flaw allows an attacker with local access to retrieve hashed passwords and potentially escalate privileges from system logs. Rated MEDIUM with a CVSS score of 5.5, the attack requires low privileges and local access, but has a high confidentiality impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 23.1.2CPE matchmatch criteria
cpe:2.3:a:canonical:cloud-init:*:*:*:*:*:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:esm:*:*:*
20.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
22.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:22.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
18.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0026 is in the 73rd percentile among its peer group of 15,938 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 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 (11)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: cbl2 cloud-init 22.4-3 on CBL Mariner 2.0Fixed in: 22.4-3
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 ARMFixed in: 21.4-3
microsoftpatch availablevia msrc
Product: cm1 cloud-init 21.4-3 on CBL Mariner 1.0Fixed in: 21.4-3
microsoftpatch availablevia msrc
Product: 17895-16820Fixed in: 21.4-3
microsoftpatch availablevia msrc
Product: 17896-16823Fixed in: 22.4-3
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 22.4-3
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 22.4-3
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 x64Fixed in: 21.4-3
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: cloud-init-0:23.1.1-11.el9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: cloud-init-0:23.1.1-10.el8
View patch

Vendor Advisories (3)

microsoft2023-Jul/CVE-2023-1786

CVE-2023-1786

Jul 11, 2023
redhatCVE-2023-1786Moderate

cloud-init: sensitive data could be exposed in logs

Apr 27, 2023
microsoft2023-Apr/CVE-2023-1786Moderate

sensitive data exposure in cloud-init logs

Apr 11, 2023

References

bugs.launchpad.net / cloud-init/+bug/2013967
Issue Tracking
github.com / canonical/cloud-init/commit/a378b7e4f47375458651c0972e7cd813f6fe0a6b
Patch
lists.fedoraproject.org / archives/list/[email protected]/message/ATBJSXPL2IOAD2LDQRKWPLIC7QXS44GZ
Mailing ListThird Party Advisory
ubuntu.com / security/notices/USN-6042-1
Third Party Advisory