How severe is CVE-2022-30055?

CVE-2022-30055 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-2022-30055 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-30055?

CVE-2022-30055 affects Mersenne Prime95. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-30055?

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-2022-30055 published?

CVE-2022-30055 was published on 2022-05-16 and last updated on 2026-06-17.

CVE-2022-30055

CVE-2022-30055 is a critical-severity vulnerability in Mersenne Prime95 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-120.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Mersenne Prime95
Published: 2022-05-16
Last modified: 2026-06-17

Description

Prime95 30.7 build 9 suffers from a Buffer Overflow vulnerability that could lead to Remote Code Execution.

Frequently asked questions

What is CVE-2022-30055?: Prime95 30.7 build 9 suffers from a Buffer Overflow vulnerability that could lead to Remote Code Execution.
How severe is CVE-2022-30055?: CVE-2022-30055 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-2022-30055 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-30055?: CVE-2022-30055 affects Mersenne Prime95. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-30055?: 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-2022-30055 published?: CVE-2022-30055 was published on 2022-05-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mersenne:prime95:30.7:build9:*:*:*:*:*:*

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