CVE-2026-3391Public exploit

Local interpreter crash via storage cleanup overrun

Published Mar 1, 2026 · Updated Mar 1, 2026

Out-of-bounds read in FascinatedBox Lily 2.0 through 2.3 allows local users to crash the interpreter with a crafted Lily script. The clear_storages function reads past its allocated storage array while cleaning emitter state after a lambda block. The affected interpreter must execute attacker-controlled source; the demonstrated consequence is a process abort, with no reported code execution or direct data disclosure.

CVSS severity3.3
Low
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in FascinatedBox Lily 2.0 through 2.3 allows local users to crash the interpreter with a crafted Lily script. The clear_storages function reads past its allocated storage array while cleaning emitter state after a lambda block. The affected interpreter must execute attacker-controlled source; the demonstrated consequence is a process abort, with no reported code execution or direct data disclosure.

The record

CVE
CVE-2026-3391
Published
Mar 1, 2026
Updated
Mar 1, 2026
Vendor
FascinatedBox
Product
Lily
Classifications
CWE-119, CWE-125
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Mar 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.0
  2. Affected versionversion=2.1
  3. Affected versionversion=2.2
  4. Affected versionversion=2.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

FascinatedBox · Lilyversion=2.0; version=2.1; version=2.2; version=2.3

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
1.7VulDBAV:L/AC:L/Au:S/C:N/I:N/A:P
1.9VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-125Out-of-bounds Read

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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