{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-56003","assignerOrgId":"404e59f5-483d-4b8a-8e7a-e67604dd8afb","state":"PUBLISHED","assignerShortName":"suse","dateReserved":"2026-06-18T09:26:55.988Z","datePublished":"2026-07-08T09:25:41.723Z","dateUpdated":"2026-07-09T03:55:47.539Z"},"containers":{"cna":{"providerMetadata":{"orgId":"404e59f5-483d-4b8a-8e7a-e67604dd8afb","shortName":"suse","dateUpdated":"2026-07-08T09:25:41.723Z"},"title":"libXfont2 computeProps Property Buffer Heap Buffer Overflow","datePublic":"2026-07-08T09:22:00.000Z","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-122","description":"CWE-122 Heap-based buffer overflow","type":"CWE"}]}],"impacts":[{"capecId":"CAPEC-234","descriptions":[{"lang":"en","value":"CAPEC-234 Hijacking a privileged process"}]}],"affected":[{"vendor":"X.Org","product":"libXfont2","packageName":"libXfont2","repo":"https://gitlab.freedesktop.org/xorg/lib/libxfont/","versions":[{"status":"affected","version":"0","lessThan":"2.0.8","versionType":"rpm"}],"defaultStatus":"unaffected"}],"cpeApplicability":[{"operator":"OR","nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:x.org:libxfont2:*:*:*:*:*:*:*:*","versionStartIncluding":"0","versionEndExcluding":"2.0.8"}]}]}],"descriptions":[{"lang":"en","value":"A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in libXfont2 ComputeScaledProperties() before libXfont2 before 2.0.8 could be used by attackers using authenticated X clients to execute code within the X server.","supportingMedia":[{"type":"text/html","base64":false,"value":"<pre>A heap buffer overflow due to missing size checking in the property buffer when parsing PCF files in libXfont2 ComputeScaledProperties() before libXfont2 before 2.0.8 could be used by attackers using authenticated X clients to execute code within the X server.</pre>"}]}],"references":[{"url":"https://www.openwall.com/lists/oss-security/2026/07/08/1","tags":["vendor-advisory"]},{"url":"https://gitlab.freedesktop.org/xorg/lib/libxfont/-/commit/dff957a5158da038a282a59a31fe736702732939","tags":["patch"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseSeverity":"HIGH","baseScore":8.5,"vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H"}}],"credits":[{"lang":"en","value":"Anonymous working with Trend Micro Zero Day Initiative","type":"finder"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.2"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-08T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-56003"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-09T03:55:47.539Z"}}]}}