How severe is CVE-2026-30363?

CVE-2026-30363 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-30363 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-30363?

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

Does CVE-2026-30363 have an EU (EUVD) identifier?

Yes. CVE-2026-30363 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26705.

When was CVE-2026-30363 published?

CVE-2026-30363 was published on 2026-05-01 and last updated on 2026-06-17.

CVE-2026-30363

CVE-2026-30363 is a high-severity vulnerability with a CVSS 3.x base score of 8.4. 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-121.

Key facts

Severity: High (CVSS 3.x base score 8.4)
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26705
Weakness: CWE-121
Published: 2026-05-01
Last modified: 2026-06-17

Description

flipperzero-firmware commit ad2a80 was discovered to contain a stack overflow in the "Main" function.

Frequently asked questions

What is CVE-2026-30363?: flipperzero-firmware commit ad2a80 was discovered to contain a stack overflow in the "Main" function.
How severe is CVE-2026-30363?: CVE-2026-30363 has a CVSS 3.x base score of 8.4, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-30363 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-30363?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-30363 have an EU (EUVD) identifier?: Yes. CVE-2026-30363 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26705.
When was CVE-2026-30363 published?: CVE-2026-30363 was published on 2026-05-01 and last updated on 2026-06-17.

References

Other CWE-121 (Stack-based Buffer Overflow) vulnerabilities

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