CVE-2026-54727Public exploit

User-assisted cross-container file read and write via hardlinks

Published Jul 29, 2026 · Updated Jul 29, 2026

Improper container isolation in Termux PRoot-Distro before 5.1.6 allows attackers to read and write cross-container files via crafted archives. The restore command resolves a hardlink source from the archive linkname and copies it without confirming that its source container matches the destination container. Exploitation requires a user to restore the archive; copying remains inside the containers directory but can disclose secrets or inject attacker-controlled files.

CVSS severity8.2
High
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper container isolation in Termux PRoot-Distro before 5.1.6 allows attackers to read and write cross-container files via crafted archives. The restore command resolves a hardlink source from the archive linkname and copies it without confirming that its source container matches the destination container. Exploitation requires a user to restore the archive; copying remains inside the containers directory but can disclose secrets or inject attacker-controlled files.

The record

CVE
CVE-2026-54727
Published
Jul 29, 2026
Updated
Jul 29, 2026
Vendor
Termux
Product
PRoot-Distro
Classifications
CWE-668, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 29, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 29, 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=< 5.1.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Termux · PRoot-Distroversion=< 5.1.6

Published CVSS scores

8.2GitHub, Inc.CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

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-668Exposure of Resource to Wrong Sphere
T1204.002User Execution: Malicious File

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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