Freedesktop.Org Libslirp vulnerabilities

1 vulnerability

Known vulnerabilities in Freedesktop.Org Libslirp, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.

6.5CVE-2026-9539debianlibslirp+12
EPSS score
0.22%
An out-of-bounds heap read and integer underflow in the TCP urgent data handling (sosendoob) in freedesktop.org libslirp version before v4.9.2 on hypervisor host environments (e.g., QEMU) allows a privileged guest VM attacker (root or CAP_NET_RAW) to leak gigabytes of sensitive host-process heap memory via sending crafted TCP segments with manipulated URG flags and urgent pointers (ti_urp).