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        "cveId": "CVE-2026-18728",
        "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "state": "PUBLISHED",
        "assignerShortName": "redhat",
        "dateReserved": "2026-08-03T17:55:57.114Z",
        "datePublished": "2026-08-13T03:13:55.805Z",
        "dateUpdated": "2026-08-18T14:37:36.014Z"
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            "title": "Open-iscsi: open-iscsi: integer underflow in iscsiuio ipv4 dhcp parsing",
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                        "attackComplexity": "LOW",
                        "attackVector": "ADJACENT_NETWORK",
                        "availabilityImpact": "HIGH",
                        "baseScore": 6.5,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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            "descriptions": [
                {
                    "lang": "en",
                    "value": "A flaw was found in open-iscsi. An integer underflow vulnerability in the `iscsiuio` component, specifically during IPv4 Dynamic Host Configuration Protocol (DHCP) parsing, allows a remote attacker on the same local network segment to cause a denial of service. By sending a specially crafted IPv4/UDP DHCP reply, the attacker can trigger an out-of-bounds read, leading to the `iscsiuio` process crashing. This issue affects systems where `iscsiuio` is actively handling IPv4 DHCP traffic."
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            ],
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                    "vendor": "Red Hat",
                    "product": "Red Hat Enterprise Linux 10",
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                    "packageName": "iscsi-initiator-utils",
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                    "url": "https://access.redhat.com/security/cve/CVE-2026-18728",
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                    "name": "RHBZ#2463029",
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            "datePublic": "2026-08-12T18:05:24.879Z",
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                    "descriptions": [
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                            "cweId": "CWE-191",
                            "description": "Integer Underflow (Wrap or Wraparound)",
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                            "type": "CWE"
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            ],
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            "workarounds": [
                {
                    "lang": "en",
                    "value": "To mitigate this issue, restrict network access to `iscsiuio`-managed interfaces. Configure firewall rules to limit DHCP/BOOTP traffic to only trusted infrastructure within the local broadcast domain. This reduces the exposure to untrusted systems that could send crafted IPv4 DHCP packets. If `iscsiuio` is actively using IPv4 DHCP, consider reconfiguring it to use static IP addresses or a different network configuration if feasible. Changes to network configuration may require a service restart."
                }
            ],
            "timeline": [
                {
                    "lang": "en",
                    "time": "2026-04-26T20:41:55.000Z",
                    "value": "Reported to Red Hat."
                },
                {
                    "lang": "en",
                    "time": "2026-08-12T18:05:24.879Z",
                    "value": "Made public."
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "This issue was discovered by In partnership with Red Hat (Aisle.com) and Keith Linneman (Linneman Labs)."
                }
            ],
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