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CVE-2019-11503

25
FAUCET Score

CVE-2019-11503 describes a symlink race vulnerability in snap-confine, a component of Canonical's snapd software prior to version 2.39. This flaw, dubbed a "cwd restore permission bypass," could allow an attacker to bypass security mechanisms during directory changes. With a CVSS score of 7.5 (HIGH), the vulnerability is network-exploitable with low attack complexity, potentially leading to high integrity impact without requiring user interaction. While no public exploit code or active exploitation has been observed, and community discussion is minimal, organizations using affected snapd versions should prioritize patching.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.39CPE matchmatch criteria
cpe:2.3:a:canonical:snapd:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/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
3.0

Exploit Intelligence

EPSS Score
2.42%
Probability of exploitation in next 30 days
EPSS Percentile
82.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0242 is in the 69th percentile among its peer group of 51,506 CVEs.

Social Chatter

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

Remediation records are not available for this CVE.

References

github.com / snapcore/snapd/pull/6642
Third Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/6VACEKVQ7UAZ32WO4ZKCFW6YOBSYJ76L
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/VPU6APEZHAA7N2AI57OT4J2P7NKHFOLM
openwall.com / lists/oss-security/2019/04/18/4
ExploitMailing ListPatchThird Party Advisory
openwall.com / lists/oss-security/2019/04/25/7
Third Party Advisory