CVE-2026-18806

Arbitrary block-device overwrite via unvalidated path

Published Aug 4, 2026 · Updated Aug 4, 2026

Path-control flaw in Pardus Image Writer before 0.9.0 allows local users to overwrite arbitrary block devices with disk-image data. The public advisory identifies missing validation before a caller-controlled destination path is used for raw image output, but does not name the function. Low-privilege local access is required; overwriting a system disk or another important device can destroy its contents and prevent client operation.

CVSS severity7.1
High
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path-control flaw in Pardus Image Writer before 0.9.0 allows local users to overwrite arbitrary block devices with disk-image data. The public advisory identifies missing validation before a caller-controlled destination path is used for raw image output, but does not name the function. Low-privilege local access is required; overwriting a system disk or another important device can destroy its contents and prevent client operation.

The record

CVE
CVE-2026-18806
Published
Aug 4, 2026
Updated
Aug 4, 2026
Vendor
TÜBİTAK BİLGEM Software Technologies Research Institute
Product
Pardus Image Writer
Classifications
CWE-73, T1561.002
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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 <1.0.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

TÜBİTAK BİLGEM Software Technologies Research Institute · Pardus Image Writerversion=0 <1.0.4

Published CVSS scores

7.1Computer Emergency Response Team of the Republic of TurkeyCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-73External Control of File Name or Path
T1561.002Disk Structure Wipe

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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