How severe is CVE-2022-0080?

CVE-2022-0080 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-2022-0080 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-0080?

CVE-2022-0080 affects Mruby. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-0080?

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-2022-0080 published?

CVE-2022-0080 was published on 2022-01-02 and last updated on 2026-06-17.

CVE-2022-0080

CVE-2022-0080 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% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-122
Affected product: Mruby
Published: 2022-01-02
Last modified: 2026-06-17

Description

mruby is vulnerable to Heap-based Buffer Overflow

Frequently asked questions

What is CVE-2022-0080?: mruby is vulnerable to Heap-based Buffer Overflow
How severe is CVE-2022-0080?: CVE-2022-0080 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-2022-0080 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-0080?: CVE-2022-0080 affects Mruby. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-0080?: 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-2022-0080 published?: CVE-2022-0080 was published on 2022-01-02 and last updated on 2026-06-17.

References

Affected products (1)

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

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