{"schemaVersion":3,"id":"CVE-2021-28025","aliases":["UBUNTU-CVE-2021-28025","DEBIAN-CVE-2021-28025"],"status":"published","duplicateOf":null,"title":null,"description":"Integer Overflow vulnerability in qsvghandler.cpp in Qt qtsvg versions 5.15.1, 6.0.0, 6.0.2, and 6.2, allows local attackers to cause a denial of service (DoS).","dates":{"published":"2023-08-11T00:00:00.000Z","modified":"2024-10-09T17:37:40.750Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.5,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":5.5,"severity":"medium","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":4.6,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Debian","score":5.5,"severity":"medium","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":4.6,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.5,"severity":"medium","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00291,"percentile":0.20321,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00291},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00291,"percentile":0.20321}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00291,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00291,"percentile":0.20321}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[{"id":"REF_9FFE84A194303DC2","name":"Exploit Reference (bugreports.qt.io)","source":"reference","url":"https://bugreports.qt.io/browse/QTBUG-91507","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-190","name":"Integer Overflow or Wraparound","description":"The product performs a calculation that can\n         produce an integer overflow or wraparound when the logic\n         assumes that the resulting value will always be larger than\n         the original value. This occurs when an integer value is\n         incremented to a value that is too large to store in the\n         associated representation. When this occurs, the value may\n         become a very small or negative number.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/190.html"}],"affected":[{"vendor":"debian","product":"qtsvg-opensource-src","name":"qtsvg-opensource-src","label":"qtsvg-opensource-src","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/qtsvg-opensource-src","purlType":"deb","versions":[{"text":"< 5.15.4-2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.15.4-2","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"qt4-x11","name":"qt4-x11","label":"qt4-x11","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/qt4-x11","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"qt6-svg","name":"qt6-svg","label":"qt6-svg","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/qt6-svg","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"qtsvg-opensource-src","name":"qtsvg-opensource-src","label":"qtsvg-opensource-src","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/qtsvg-opensource-src","purlType":"deb","versions":[{"text":"< 5.5.1-2ubuntu0.1~esm1","noFixRecorded":false,"fixedIn":null},{"text":"< 5.12.8-0ubuntu1+esm1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 5.5.1-2ubuntu0.1~esm1 | < 5.12.8-0ubuntu1+esm1","eol":null,"hubHref":null},{"vendor":"qt","product":"qt","name":"qt","label":"qt","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"5.15.1","noFixRecorded":false,"fixedIn":null},{"text":"6.0.0","noFixRecorded":false,"fixedIn":null},{"text":"6.0.0:alpha1","noFixRecorded":false,"fixedIn":null},{"text":"6.0.0:beta1","noFixRecorded":false,"fixedIn":null},{"text":"6.0.0:beta2","noFixRecorded":false,"fixedIn":null},{"text":"6.0.0:beta3","noFixRecorded":false,"fixedIn":null},{"text":"6.0.0:beta4","noFixRecorded":false,"fixedIn":null},{"text":"6.0.0:beta5","noFixRecorded":false,"fixedIn":null},{"text":"6.0.0:rc1","noFixRecorded":false,"fixedIn":null},{"text":"6.0.0:rc2","noFixRecorded":false,"fixedIn":null},{"text":"6.0.2","noFixRecorded":false,"fixedIn":null},{"text":"6.2.0:alpha1","noFixRecorded":false,"fixedIn":null},{"text":"6.2.0:beta1","noFixRecorded":false,"fixedIn":null},{"text":"6.2.0:beta2","noFixRecorded":false,"fixedIn":null},{"text":"6.2.0:beta3","noFixRecorded":false,"fixedIn":null},{"text":"6.2.0:beta4","noFixRecorded":false,"fixedIn":null},{"text":"6.2.0:rc1","noFixRecorded":false,"fixedIn":null},{"text":"6.2.0:rc2","noFixRecorded":false,"fixedIn":null}],"versionsText":"5.15.1 | 6.0.0 | 6.0.0:alpha1 | 6.0.0:beta1 | 6.0.0:beta2 | 6.0.0:beta3 | 6.0.0:beta4 | 6.0.0:beta5 | 6.0.0:rc1 | 6.0.0:rc2 | 6.0.2 | 6.2.0:alpha1 | 6.2.0:beta1 | 6.2.0:beta2 | 6.2.0:beta3 | 6.2.0:beta4 | 6.2.0:rc1 | 6.2.0:rc2","eol":{"isEol":true,"eolDate":"2020-12-08T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"5.15","label":"5.15 (LTS)","eolFrom":"2020-12-08T00:00:00.000Z","isLts":true,"isMaintained":false,"latestVersion":"5.15.17"},"product":{"name":"qt","label":"Qt","category":"framework"}},"hubHref":"/vendor/qt/qt"}],"affectedCount":5,"eol":{"hasEol":true,"count":1},"references":[{"url":"https://bugreports.qt.io/browse/QTBUG-91507","label":"bugreports.qt.io/browse/QTBUG-91507","hostname":"bugreports.qt.io","tags":["REPORT","Exploit","Issue Tracking","Vendor Advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-28025","label":"ubuntu.com/security/CVE-2021-28025","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://code.qt.io/cgit/qt/qtsvg.git/commit/?id=7bbf88403fd2d1fe79fab7c8e469f8aeafeb7372","label":"code.qt.io/cgit/qt/qtsvg.git/commit/?id=7bbf88403fd2d1fe79fab7c8e469f8aeafeb7372","hostname":"code.qt.io","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-28025","label":"www.cve.org/CVERecord?id=CVE-2021-28025","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-8337-1","label":"ubuntu.com/security/notices/USN-8337-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-28025","label":"security-tracker.debian.org/tracker/CVE-2021-28025","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["USN-8337-1"],"duplicates":[],"related":["USN-8337-1"]},"timeline":[{"kind":"published","date":"2023-08-11T00:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-10-09T17:37:40.750Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":32,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T03:12:05.055Z","stale":false,"partial":false}}