How severe is CVE-2022-0631?

CVE-2022-0631 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-0631 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-0631?

CVE-2022-0631 affects Mruby. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-0631?

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

When was CVE-2022-0631 published?

CVE-2022-0631 was published on 2022-02-18 and last updated on 2026-06-17.

CVE-2022-0631

CVE-2022-0631 is a critical-severity vulnerability in Mruby with a CVSS 3.x base score of 9.8. 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-122.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-122
Affected product: Mruby
Published: 2022-02-18
Last modified: 2026-06-17

Description

Heap-based Buffer Overflow in Homebrew mruby prior to 3.2.

Frequently asked questions

What is CVE-2022-0631?: Heap-based Buffer Overflow in Homebrew mruby prior to 3.2.
How severe is CVE-2022-0631?: CVE-2022-0631 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-0631 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-0631?: CVE-2022-0631 affects Mruby. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-0631?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2022-0631 published?: CVE-2022-0631 was published on 2022-02-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mruby:mruby:*:*:*:*:*:*:*:*

More vulnerabilities in Mruby

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