CVE-2026-30363Public exploit

Device crash via undersized main-thread stack

Published May 1, 2026 · Updated May 1, 2026

Stack exhaustion in Flipper Zero firmware commit ad2a800 allows attackers to crash the device through a configuration-dependent update call chain. The linker script reserves 1,024 bytes for the main thread, while static analysis estimates a 1,464-byte worst-case call chain through firmware-update manifest parsing. The public evidence identifies no attacker-controlled trigger and demonstrates static analysis rather than a runtime crash, so exploitability beyond configuration-dependent device failure remains unverified.

CVSS severity8.4
High
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack exhaustion in Flipper Zero firmware commit ad2a800 allows attackers to crash the device through a configuration-dependent update call chain. The linker script reserves 1,024 bytes for the main thread, while static analysis estimates a 1,464-byte worst-case call chain through firmware-update manifest parsing. The public evidence identifies no attacker-controlled trigger and demonstrates static analysis rather than a runtime crash, so exploitability beyond configuration-dependent device failure remains unverified.

The record

CVE
CVE-2026-30363
Published
May 1, 2026
Updated
May 1, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-121
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 1, 2026CVE publishedPublication date reported by the CVE source.
  2. May 1, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.4CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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