VulnSocial

CVE-2026-88807

LOWCVSS 8.9 · HIGH

Signal is active with 1 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 overflow in libXrender before 0.9.13 in RenderQueryPictFormats could be used by malicious X servers to inject code into attached X clients.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-122

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-09-23: 109-23
Full discourse1 post
  • Upwind Security MDR@UpwindMDR

    🚨HIGH - libXrender Heap Overflow via RenderQueryPictFormats Reply Parsing (CVE-2026-88807) libXrender < 0.9.13 mishandles RenderQueryPictFormats reply parsing, triggering a heap-based buffer overflow when processing a crafted X Render extension response. A malicious X server can corrupt heap memory in connected X clients, potentially leading to code execution. 👉Affected: libXrender < 0.9.13 | Upgrade to 0.9.13

    0000031
    305 followersView on X

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