VulnSocial

CVE-2026-56003Disclosure(x / libxfont)

LOWCVSS 8.8 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in libXfont2 ComputeScaledProperties() before libXfont2 before 2.0.8 could be used by attackers using authenticated X clients to execute code within the X server.

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0.0/ 10 priority

Sources & remediation

Patch / fix
Weakness type (CWE)
CWE-122

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • libxfont

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • 2 total mentions across 1 day

Affected systems

Vendors
x
Products
libxfont

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-07-08: 2Technical Details · 2026-07-08: 207-08
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-56003 A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in libXfont2 ComputeScaledProperties() before libXfont2 before 2.0.8… https://www.cve.org/CVERecord?id=CVE-2026-56003 ----- Traducción: CVE-2026-56003 Una… http://infoflow.cloud`

    Post summary

    The text announces CVE-2026-56003, a heap buffer overflow in libXfont2 caused by missing size checks, affecting releases before 2.0.8.

    0000032
    91 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-56003 A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in libXfont2 ComputeScaledProperties() before libXfont2 before 2.0.8… https://www.cve.org/CVERecord?id=CVE-2026-56003

    Post summary

    The text reports a heap buffer overflow in libXfont2 before version 2.0.8, providing key technical details but no PoC, exploit code, or patch information.

    00000782
    57.8K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appxlibxfont---

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