How severe is CVE-2018-12021?

CVE-2018-12021 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2018-12021 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-12021?

CVE-2018-12021 affects Sylabs Singularity. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-12021?

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

When was CVE-2018-12021 published?

CVE-2018-12021 was published on 2018-07-05 and last updated on 2026-06-17.

CVE-2018-12021

CVE-2018-12021 is a medium-severity vulnerability in Sylabs Singularity with a CVSS 3.x base score of 6.5. 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-200.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 6.8
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Sylabs Singularity
Published: 2018-07-05
Last modified: 2026-06-17

Description

Singularity 2.3.0 through 2.5.1 is affected by an incorrect access control on systems supporting overlay file system. When using the overlay option, a malicious user may access sensitive information by exploiting a few specific Singularity features.

Frequently asked questions

What is CVE-2018-12021?: Singularity 2.3.0 through 2.5.1 is affected by an incorrect access control on systems supporting overlay file system. When using the overlay option, a malicious user may access sensitive information by exploiting a few specific Singularity features.
How severe is CVE-2018-12021?: CVE-2018-12021 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2018-12021 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-12021?: CVE-2018-12021 affects Sylabs Singularity. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-12021?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-12021 published?: CVE-2018-12021 was published on 2018-07-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:sylabs:singularity:*:*:*:*:*:*:*:*

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