CVE-2025-64524Public exploit

Filter crash via unchecked raster compression length

Published Nov 20, 2025 · Updated Nov 21, 2025

Heap-buffer overflow in OpenPrinting cups-filters 2.0.1 and earlier allows local users to crash rastertopclx with a crafted print job. The CompressData function writes compressed-data command bytes past CompBuffer because a crafted raster length produces more output than the allocated buffer holds. Exploitation requires permission to install a printer with a PPD that invokes rastertopclx, and the filter runs as the unprivileged lp account.

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

Heap-buffer overflow in OpenPrinting cups-filters 2.0.1 and earlier allows local users to crash rastertopclx with a crafted print job. The CompressData function writes compressed-data command bytes past CompBuffer because a crafted raster length produces more output than the allocated buffer holds. Exploitation requires permission to install a printer with a PPD that invokes rastertopclx, and the filter runs as the unprivileged lp account.

The record

CVE
CVE-2025-64524
Published
Nov 20, 2025
Updated
Nov 21, 2025
Vendor
OpenPrinting
Product
cups-filters
Classifications
CWE-787, CWE-122, T1203
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 21, 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=<= 2.0.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

OpenPrinting · cups-filtersversion=<= 2.0.1

Published CVSS scores

3.3GitHub, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
5.5NIST National Vulnerability DatabaseCVSS:3.1/AV:L/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.

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

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 exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-122Heap-based Buffer Overflow
T1203Exploitation for Client Execution

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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