How severe is CVE-2019-11503?

CVE-2019-11503 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2019-11503 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-11503?

CVE-2019-11503 affects Canonical Snapd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-11503?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-11503 published?

CVE-2019-11503 was published on 2019-04-24 and last updated on 2026-06-17.

CVE-2019-11503

CVE-2019-11503 is a high-severity vulnerability in Canonical Snapd with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-59.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-59
Affected product: Canonical Snapd
Published: 2019-04-24
Last modified: 2026-06-17

Description

snap-confine as included in snapd before 2.39 did not guard against symlink races when performing the chdir() to the current working directory of the calling user, aka a "cwd restore permission bypass."

Frequently asked questions

What is CVE-2019-11503?: snap-confine as included in snapd before 2.39 did not guard against symlink races when performing the chdir() to the current working directory of the calling user, aka a "cwd restore permission bypass."
How severe is CVE-2019-11503?: CVE-2019-11503 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2019-11503 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-11503?: CVE-2019-11503 affects Canonical Snapd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-11503?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-11503 published?: CVE-2019-11503 was published on 2019-04-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:canonical:snapd:*:*:*:*:*:*:*:*

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