CVE•Published 2026-06-24•Modified 2026-06-25•1 article on news•5 live references•NVD data
CVE-2026-9539
Vulnerability data via NVD (ingested)
CVSS v3.1
6.5
MEDIUM
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
EPSS percentile
1
Exploit Prediction Scoring System · top 99% of all CVEs
Weaknesses (CWE)
Description
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).
Timeline
Published 2026-06-24
Modified 2026-06-25
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
More intel sources (5)
Shodan report
vuln:CVE-2026-9539Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-9539Censys host search filtered to this CVE id.
grep.app
CVE-2026-9539Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-9539GitHub code search for direct mentions.
Google dork
"CVE-2026-9539" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.