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CVE-2026-120830

CVSS 3.1
7.4 high
CISA KEV
Not listed
Technical details
Weakness
CWE-125
EPSS · 05 Nov 2026
0.22% · p13
Public resources
None found
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

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

Description

A flaw was found in libslirp in icmp_forward_error(). When building an ICMP error response, the length of the quoted original IPv4 packet was taken from the IP header without clamping it to the actual buffer length. A truncated or malformed packet could cause an out-of-bounds heap read, leaking host memory into the ICMP error packet returned to a guest or container.

Exploits & detection

No public PoC or detection template found yet.

Timeline

  • Published: 03 Nov 2026
  • Last modified upstream: 04 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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