CVE-2021-38593

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2021-38593", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2026-11-02T18:05:43.133Z", "dateReserved": "2021-08-12T00:00:00.000Z", "datePublished": "2021-08-12T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2024-02-03T07:06:32.200Z"}, "descriptions": [{"lang": "en", "value": "Qt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in QOutlineMapper::convertPath (called from QRasterPaintEngine::fill and QPaintEngineEx::stroke)."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://github.com/qt/qtbase/commit/6b400e3147dcfd8cc3a393ace1bd118c93762e0c"}, {"url": "https://github.com/qt/qtbase/commit/202143ba41f6ac574f1858214ed8bf4a38b73ccd"}, {"url": "https://github.com/qt/qtbase/commit/1ca02cf2879a5e1511a2f2109f0925cf4c892862"}, {"url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35566"}, {"url": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/qt/OSV-2021-903.yaml"}, {"url": "https://www.qt.io/blog/qt-5.15-extended-support-for-subscription-license-holders"}, {"url": "https://wiki.qt.io/Qt_5.15_Release#Known_Issues"}, {"name": "FEDORA-2022-54760f7fa4", "tags": ["vendor-advisory"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36VN2WKMNQUSTF6ZW2X52NPAJVXJ4S5I/"}, {"name": "FEDORA-2022-4131ced81a", "tags": ["vendor-advisory"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HY5YCSDCTLHVMP3OXOM6HNTWHV6DBHDX/"}, {"name": "GLSA-202402-03", "tags": ["vendor-advisory"], "url": "https://security.gentoo.org/glsa/202402-03"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T01:44:23.600Z"}, "title": "CVE Program Container", "references": [{"url": "https://github.com/qt/qtbase/commit/6b400e3147dcfd8cc3a393ace1bd118c93762e0c", "tags": ["x_transferred"]}, {"url": "https://github.com/qt/qtbase/commit/202143ba41f6ac574f1858214ed8bf4a38b73ccd", "tags": ["x_transferred"]}, {"url": "https://github.com/qt/qtbase/commit/1ca02cf2879a5e1511a2f2109f0925cf4c892862", "tags": ["x_transferred"]}, {"url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35566", "tags": ["x_transferred"]}, {"url": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/qt/OSV-2021-903.yaml", "tags": ["x_transferred"]}, {"url": "https://www.qt.io/blog/qt-5.15-extended-support-for-subscription-license-holders", "tags": ["x_transferred"]}, {"url": "https://wiki.qt.io/Qt_5.15_Release#Known_Issues", "tags": ["x_transferred"]}, {"name": "FEDORA-2022-54760f7fa4", "tags": ["vendor-advisory", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36VN2WKMNQUSTF6ZW2X52NPAJVXJ4S5I/"}, {"name": "FEDORA-2022-4131ced81a", "tags": ["vendor-advisory", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HY5YCSDCTLHVMP3OXOM6HNTWHV6DBHDX/"}, {"name": "GLSA-202402-03", "tags": ["vendor-advisory", "x_transferred"], "url": "https://security.gentoo.org/glsa/202402-03"}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-11-02T18:05:25.896370Z", "id": "CVE-2021-38593", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-02T18:05:43.133Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://github.com/qt/qtbase/commit/6b400e3147dcfd8cc3a393ace1bd118c93762e0c", "tags": ["x_transferred"]}, {"url": "https://github.com/qt/qtbase/commit/202143ba41f6ac574f1858214ed8bf4a38b73ccd", "tags": ["x_transferred"]}, {"url": "https://github.com/qt/qtbase/commit/1ca02cf2879a5e1511a2f2109f0925cf4c892862", "tags": ["x_transferred"]}, {"url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35566", "tags": ["x_transferred"]}, {"url": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/qt/OSV-2021-903.yaml", "tags": ["x_transferred"]}, {"url": "https://www.qt.io/blog/qt-5.15-extended-support-for-subscription-license-holders", "tags": ["x_transferred"]}, {"url": "https://wiki.qt.io/Qt_5.15_Release#Known_Issues", "tags": ["x_transferred"]}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36VN2WKMNQUSTF6ZW2X52NPAJVXJ4S5I/", "name": "FEDORA-2022-54760f7fa4", "tags": ["vendor-advisory", "x_transferred"]}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HY5YCSDCTLHVMP3OXOM6HNTWHV6DBHDX/", "name": "FEDORA-2022-4131ced81a", "tags": ["vendor-advisory", "x_transferred"]}, {"url": "https://security.gentoo.org/glsa/202402-03", "name": "GLSA-202402-03", "tags": ["vendor-advisory", "x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T01:44:23.600Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-38593", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-02T18:05:25.896370Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-06-04T13:28:58.913Z"}}], "cna": {"affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "references": [{"url": "https://github.com/qt/qtbase/commit/6b400e3147dcfd8cc3a393ace1bd118c93762e0c"}, {"url": "https://github.com/qt/qtbase/commit/202143ba41f6ac574f1858214ed8bf4a38b73ccd"}, {"url": "https://github.com/qt/qtbase/commit/1ca02cf2879a5e1511a2f2109f0925cf4c892862"}, {"url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35566"}, {"url": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/qt/OSV-2021-903.yaml"}, {"url": "https://www.qt.io/blog/qt-5.15-extended-support-for-subscription-license-holders"}, {"url": "https://wiki.qt.io/Qt_5.15_Release#Known_Issues"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36VN2WKMNQUSTF6ZW2X52NPAJVXJ4S5I/", "name": "FEDORA-2022-54760f7fa4", "tags": ["vendor-advisory"]}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HY5YCSDCTLHVMP3OXOM6HNTWHV6DBHDX/", "name": "FEDORA-2022-4131ced81a", "tags": ["vendor-advisory"]}, {"url": "https://security.gentoo.org/glsa/202402-03", "name": "GLSA-202402-03", "tags": ["vendor-advisory"]}], "descriptions": [{"lang": "en", "value": "Qt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in QOutlineMapper::convertPath (called from QRasterPaintEngine::fill and QPaintEngineEx::stroke)."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "text", "description": "n/a"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2024-02-03T07:06:32.200Z"}}}, "cveMetadata": {"cveId": "CVE-2021-38593", "state": "PUBLISHED", "dateUpdated": "2026-11-02T18:05:43.133Z", "dateReserved": "2021-08-12T00:00:00.000Z", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "datePublished": "2021-08-12T00:00:00.000Z", "assignerShortName": "mitre"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*", "matchCriteriaId": "A3DF360C-4ADC-4C67-802D-4E6651BE9782", "versionEndExcluding": "5.15.6", "versionStartIncluding": "5.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*", "matchCriteriaId": "44ADCFEF-FA24-4424-94C4-A455F8E53CD2", "versionEndIncluding": "6.1.2", "versionStartIncluding": "6.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*", "matchCriteriaId": "80E516C0-98A4-4ADE-B69F-66A772E2BAAA", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*", "matchCriteriaId": "5C675112-476C-4D7C-BCB9-A2FB2D0BC9FD", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Qt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in QOutlineMapper::convertPath (called from QRasterPaintEngine::fill and QPaintEngineEx::stroke)."}, {"lang": "es", "value": "Qt 5.x antes de la versi\u00f3n 5.15.6 y 6.x hasta la versi\u00f3n 6.1.2 tiene una escritura fuera de l\u00edmites en QOutlineMapper::convertPath (llamada desde QRasterPaintEngine::fill y QPaintEngineEx::stroke)"}], "id": "CVE-2021-38593", "lastModified": "2026-11-02T19:17:44.107", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-38593", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-02T18:05:25.896370Z", "version": "2.0.3"}}]}, "published": "2021-08-12T02:15:06.580", "references": [{"source": "cve@mitre.org", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35566"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/qt/OSV-2021-903.yaml"}, {"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/qt/qtbase/commit/1ca02cf2879a5e1511a2f2109f0925cf4c892862"}, {"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/qt/qtbase/commit/202143ba41f6ac574f1858214ed8bf4a38b73ccd"}, {"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/qt/qtbase/commit/6b400e3147dcfd8cc3a393ace1bd118c93762e0c"}, {"source": "cve@mitre.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36VN2WKMNQUSTF6ZW2X52NPAJVXJ4S5I/"}, {"source": "cve@mitre.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HY5YCSDCTLHVMP3OXOM6HNTWHV6DBHDX/"}, {"source": "cve@mitre.org", "url": "https://security.gentoo.org/glsa/202402-03"}, {"source": "cve@mitre.org", "tags": ["Issue Tracking", "Release Notes", "Vendor Advisory"], "url": "https://wiki.qt.io/Qt_5.15_Release#Known_Issues"}, {"source": "cve@mitre.org", "tags": ["Release Notes"], "url": "https://www.qt.io/blog/qt-5.15-extended-support-for-subscription-license-holders"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35566"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/qt/OSV-2021-903.yaml"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/qt/qtbase/commit/1ca02cf2879a5e1511a2f2109f0925cf4c892862"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/qt/qtbase/commit/202143ba41f6ac574f1858214ed8bf4a38b73ccd"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/qt/qtbase/commit/6b400e3147dcfd8cc3a393ace1bd118c93762e0c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36VN2WKMNQUSTF6ZW2X52NPAJVXJ4S5I/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HY5YCSDCTLHVMP3OXOM6HNTWHV6DBHDX/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://security.gentoo.org/glsa/202402-03"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Release Notes", "Vendor Advisory"], "url": "https://wiki.qt.io/Qt_5.15_Release#Known_Issues"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes"], "url": "https://www.qt.io/blog/qt-5.15-extended-support-for-subscription-license-holders"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2022:1796", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "qt5-qtbase-0:5.15.2-4.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2022-05-10T00:00:00Z"}], "bugzilla": {"description": "qt: out-of-bounds write in QOutlineMapper::convertPath called from QRasterPaintEngine::fill and QPaintEngineEx::stroke", "id": "1994719", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1994719"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-787", "details": ["Qt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in QOutlineMapper::convertPath (called from QRasterPaintEngine::fill and QPaintEngineEx::stroke)."], "name": "CVE-2021-38593", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "qt", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "qt3", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "qt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "qt3", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "qt5-qtbase", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "qt5", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "qt5", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "qt5-qtbase", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2021-07-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-38593\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-38593"], "statement": "This vulnerability is rated as moderate because it allows a remote attacker to trigger a denial of service through an out-of-bounds write, exploiting this flaw could crash the application, impacting availability but not compromising system security or integrity.\nWithin regulated environments, a combination of the following controls acts as a significant barrier to successfully exploiting a CWE-787: Out-of-bounds Write vulnerability and therefore downgrades the severity of this particular CVE from Moderate to Low.\nThe platform enforces hardening guidelines to apply the most restrictive settings necessary for operational requirements. Baseline configurations and system controls ensure secure software settings, while least functionality reduces the attack surface by disabling unauthorized services and ports. The environment employs IPS/IDS and antimalware solutions to detect and prevent malicious code exploiting out-of-bounds write vulnerabilities, using mechanisms such as file integrity monitoring and patch management. Robust input validation and error handling ensure all user inputs are thoroughly validated, preventing instability, data exposure, or privilege escalation. Finally, the platform uses memory protection mechanisms such as Data Execution Prevention (DEP) and Address Space Layout Randomization (ASLR) to strengthen resilience against out-of-bounds write exploits.", "threat_severity": "Moderate"}

{}