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CVE-2026-120831

CVSS 3.1
6.5 medium
CISA KEV
Not listed
Technical details
Weakness
CWE-787
EPSS · 05 Nov 2026
0.27% · p19
Public resources
None found
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

No VulnCrest analysis published for this CVE yet. Below is the original CNA/NVD description, unmodified.

Description

A flaw was found in libslirp in if_output(). When moving a session from the fast queue to the batch queue, the code unlinked and reinserted an arbitrary packet via ifm->m_nextpkt instead of the session queue head, corrupting queue pointers. A guest generating burst traffic could crash the host networking process, causing a denial of service.

Exploits & detection

No public PoC or detection template found yet.

Timeline

  • Published: 03 Nov 2026
  • Last modified upstream: 05 Nov 2026

Sources & licenses

CVE / CVSS / CWE
NVD record ↗ (unmodified). This product uses the NVD API but is not endorsed or certified by the NVD. CVE® © The MITRE Corporation.
Exploitation
CISA KEV (CC0) · EPSS by FIRST.org
References used for the analysis
Analysis, summary and remediation
© VulnCrest

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