CVE-2025-59820

Arbitrary code execution via negative TGA pixel count

Published Nov 26, 2025 · Updated Dec 6, 2025

Heap-based buffer overflow in KDE Krita before 5.2.13 allows remote attackers to execute code after a user opens a crafted TGA file. KisTgaImport continues parsing when the calculated pixel count is negative, then copies user-supplied data without validating its length against the heap buffer. Exploitation requires a user to open the file; successful execution runs with the privileges of the Krita process, while malformed input can instead crash the application.

CVSS severity6.7
Medium
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

Heap-based buffer overflow in KDE Krita before 5.2.13 allows remote attackers to execute code after a user opens a crafted TGA file. KisTgaImport continues parsing when the calculated pixel count is negative, then copies user-supplied data without validating its length against the heap buffer. Exploitation requires a user to open the file; successful execution runs with the privileges of the Krita process, while malformed input can instead crash the application.

The record

CVE
CVE-2025-59820
Published
Nov 26, 2025
Updated
Dec 6, 2025
Vendor
KDE
Product
Krita
Classifications
CWE-1284, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 6, 2025Record 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 <5.2.13

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

KDE · Kritaversion=0 <5.2.13

Published CVSS scores

7.8Zero Day InitiativeCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.7MITRECVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-1284Improper Validation of Specified Quantity in Input
T1204.002User Execution: Malicious File

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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