CVE-2026-9539

{"id": "CVE-2026-9539", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-9539", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-24T12:39:41.276722Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "info@starlabs.sg", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 4.0, "exploitabilityScore": 2.0}]}, "affected": [{"source": "info@starlabs.sg", "affectedData": [{"repo": "https://gitlab.freedesktop.org/slirp/libslirp/", "vendor": "freedesktop.org", "product": "libslirp", "versions": [{"status": "affected", "changes": [{"at": "4.9.2", "status": "unaffected"}], "version": "0", "lessThan": "4.9.2", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-06-24T05:17:31.100", "references": [{"url": "https://gitlab.freedesktop.org/slirp/libslirp/-/commit/927bca7344e31fd58e2f7afaca784aad4400eb84", "source": "info@starlabs.sg"}, {"url": "https://gitlab.freedesktop.org/slirp/libslirp/-/releases/v4.9.2", "source": "info@starlabs.sg"}, {"url": "https://gitlab.freedesktop.org/slirp/libslirp/-/work_items/93", "source": "info@starlabs.sg"}, {"url": "https://gitlab.freedesktop.org/slirp/libslirp/-/work_items/93", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "info@starlabs.sg", "description": [{"lang": "en", "value": "CWE-125"}]}], "descriptions": [{"lang": "en", "value": "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)."}], "lastModified": "2026-06-25T19:26:36.233", "sourceIdentifier": "info@starlabs.sg"}