CVE-2025-50422Public exploit

Process crash via violated font cleanup invariant

Published Aug 4, 2025 · Updated Aug 26, 2025

Reachable assertion in Cairo 1.18.4 and earlier allows local users to crash a consuming process through crafted PDF content. During FreeType font cleanup, _cairo_ft_unscaled_font_fini asserts that unscaled->face is NULL after crafted PDF processing leaves it populated. Exploitation requires local processing by a Cairo consumer such as Poppler, and the documented consequence is termination of that process.

CVSS severity2.9
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

Reachable assertion in Cairo 1.18.4 and earlier allows local users to crash a consuming process through crafted PDF content. During FreeType font cleanup, _cairo_ft_unscaled_font_fini asserts that unscaled->face is NULL after crafted PDF processing leaves it populated. Exploitation requires local processing by a Cairo consumer such as Poppler, and the documented consequence is termination of that process.

The record

CVE
CVE-2025-50422
Published
Aug 4, 2025
Updated
Aug 26, 2025
Vendor
Cairographics
Product
Cairo
Classifications
CWE-617, T1499
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 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 <=1.18.4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Cairographics · Cairoversion=0 <=1.18.4

Published CVSS scores

2.9MITRECVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
3.3SUSECVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

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-617Reachable Assertion
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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