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CVE-2023-1523

30
FAUCET Score

CVE-2023-1523 is a critical vulnerability affecting Canonical snapd and Ubuntu Linux, allowing a malicious snap to inject arbitrary commands into a virtual console's input after the snap exits, leading to arbitrary code execution outside the snap sandbox. With a CVSS score of 10.0 (CRITICAL), this vulnerability has a network attack vector, low complexity, and high impact on confidentiality, integrity, and availability. While no active exploitation, public exploit code, or significant community discussion has been observed, its high severity warrants immediate attention.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.59.5CPE matchmatch criteria
cpe:2.3:a:canonical:snapd:*:*:*:*:*:*:*:*
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

10.0CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.45%
Probability of exploitation in next 30 days
EPSS Percentile
70.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0145 is in the 57th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 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

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

cve.mitre.org / cgi-bin/cvename.cgi
Third Party Advisory
github.com / snapcore/snapd/pull/12849
Issue TrackingPatch
marc.info
ExploitMailing List
ubuntu.com / security/notices/USN-6125-1
Third Party Advisory