How severe is CVE-2023-28642?

CVE-2023-28642 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2023-28642 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-28642?

CVE-2023-28642 affects Linuxfoundation Runc. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-28642?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-28642 published?

CVE-2023-28642 was published on 2023-03-29 and last updated on 2026-06-17.

CVE-2023-28642

CVE-2023-28642 is a medium-severity vulnerability in Linuxfoundation Runc with a CVSS 3.x base score of 6.1. 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: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-59
Affected product: Linuxfoundation Runc
Published: 2023-03-29
Last modified: 2026-06-17

Description

runc is a CLI tool for spawning and running containers according to the OCI specification. It was found that AppArmor can be bypassed when `/proc` inside the container is symlinked with a specific mount configuration. This issue has been fixed in runc version 1.1.5, by prohibiting symlinked `/proc`. See PR #3785 for details. users are advised to upgrade. Users unable to upgrade should avoid using an untrusted container image.

Frequently asked questions

What is CVE-2023-28642?: runc is a CLI tool for spawning and running containers according to the OCI specification. It was found that AppArmor can be bypassed when `/proc` inside the container is symlinked with a specific mount configuration. This issue has been fixed in runc version 1.1.5, by prohibiting symlinked `/proc`. See PR #3785 for details. users are advised to upgrade. Users unable to upgrade should avoid using an untrusted container image.
How severe is CVE-2023-28642?: CVE-2023-28642 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2023-28642 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-28642?: CVE-2023-28642 affects Linuxfoundation Runc. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-28642?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-28642 published?: CVE-2023-28642 was published on 2023-03-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:linuxfoundation:runc:*:*:*:*:*:*:*:*

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