CVE-2026-47213Public exploitNetwork attack vector

Service exhaustion via catchable timeout signal

Published Jun 10, 2026 · Updated Jun 10, 2026

Improper process termination in BoxLite 0.8.2 and earlier allows remote authenticated users to bypass execution timeouts. The start_timeout_watcher function passes catchable SIGALRM through the execution state to the guest process instead of enforcing termination with SIGKILL. Malicious sandbox code must ignore or handle SIGALRM; it then continues past the configured limit and can exhaust virtual-machine resources, interrupting the BoxLite service.

CVSS severity6.5
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper process termination in BoxLite 0.8.2 and earlier allows remote authenticated users to bypass execution timeouts. The start_timeout_watcher function passes catchable SIGALRM through the execution state to the guest process instead of enforcing termination with SIGKILL. Malicious sandbox code must ignore or handle SIGALRM; it then continues past the configured limit and can exhaust virtual-machine resources, interrupting the BoxLite service.

The record

CVE
CVE-2026-47213
Published
Jun 10, 2026
Updated
Jun 10, 2026
Vendor
BoxLite
Product
BoxLite
Classifications
CWE-404, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 10, 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=<= 0.8.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

BoxLite · BoxLiteversion=<= 0.8.2

Published CVSS scores

6.5GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-404Improper Resource Shutdown or Release
T1499Endpoint Denial of Service

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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