{"schemaVersion":3,"id":"CVE-2024-7520","aliases":["UBUNTU-CVE-2024-7520","CGA-5w22-7php-c7jg","CGA-fgpp-73qc-hgmr","CGA-g286-7cv2-c6q2","CGA-j4cv-jpqc-cm2c"],"status":"published","duplicateOf":null,"title":null,"description":"A type confusion bug in WebAssembly could be leveraged by an attacker to potentially achieve code execution. This vulnerability affects Firefox < 129, Firefox ESR < 128.1, and Thunderbird < 128.1.","dates":{"published":"2024-08-06T12:38:13.117Z","modified":"2025-03-24T16:39:36.894Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.8,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","exploitability":7.2,"impact":9.8,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Wolfi","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","exploitability":7.2,"impact":9.8,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Chainguard","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","exploitability":7.2,"impact":9.8,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00638,"percentile":0.49642,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00638},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00638,"percentile":0.49642}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00638,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00638,"percentile":0.49642}]},"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":[],"exploitCount":0,"weaknesses":[{"id":"CWE-843","name":"Access of Resource Using Incompatible Type ('Type Confusion')","description":"The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/843.html"},{"id":"CWE-94","name":"Improper Control of Generation of Code ('Code Injection')","description":"The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/94.html"}],"affected":[{"vendor":"chainguard","product":"firefox","name":"firefox","label":"firefox","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/firefox","purlType":"apk","versions":[{"text":"< 129.0.2-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 129.0.2-r0","eol":null,"hubHref":null},{"vendor":"chainguard","product":"firefox-esr","name":"firefox-esr","label":"firefox-esr","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/firefox-esr","purlType":"apk","versions":[{"text":"< 128.1.0-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 128.1.0-r0","eol":null,"hubHref":null},{"vendor":"wolfi","product":"firefox","name":"firefox","label":"firefox","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/firefox","purlType":"apk","versions":[{"text":"< 129.0.2-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 129.0.2-r0","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"firefox","name":"firefox","label":"firefox","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/firefox","purlType":"deb","versions":[{"text":"< 129.0.1+build1-0ubuntu0.20.04.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 129.0.1+build1-0ubuntu0.20.04.1","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mozjs102","name":"mozjs102","label":"mozjs102","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mozjs102","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mozjs115","name":"mozjs115","label":"mozjs115","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mozjs115","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mozjs38","name":"mozjs38","label":"mozjs38","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mozjs38","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mozjs52","name":"mozjs52","label":"mozjs52","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mozjs52","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mozjs68","name":"mozjs68","label":"mozjs68","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mozjs68","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mozjs78","name":"mozjs78","label":"mozjs78","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mozjs78","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"mozjs91","name":"mozjs91","label":"mozjs91","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/mozjs91","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"mozilla","product":"firefox","name":"Firefox","label":"firefox","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < 129","noFixRecorded":false,"fixedIn":null},{"text":"< 129.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < 129 | < 129.0","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"firefox","label":"Firefox","category":"app"}},"hubHref":"/vendor/mozilla/firefox"},{"vendor":"mozilla","product":"firefox_esr","name":"firefox esr","label":"firefox_esr","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < 128.1","noFixRecorded":false,"fixedIn":null},{"text":"< 128.1.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < 128.1 | < 128.1.0","eol":null,"hubHref":"/vendor/mozilla/firefox_esr"},{"vendor":"mozilla","product":"thunderbird","name":"Thunderbird","label":"thunderbird","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ unspecified, < 128.1","noFixRecorded":false,"fixedIn":null},{"text":"< 128.1.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ unspecified, < 128.1 | < 128.1.0","eol":null,"hubHref":"/vendor/mozilla/thunderbird"}],"affectedCount":14,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1903041","label":"bugzilla.mozilla.org/show_bug.cgi?id=1903041","hostname":"bugzilla.mozilla.org","tags":["REPORT","Issue Tracking","Permissions Required"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2024-33/","label":"www.mozilla.org/security/advisories/mfsa2024-33/","hostname":"www.mozilla.org","tags":["REPORT","Advisory","Vendor Advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2024-35/","label":"www.mozilla.org/security/advisories/mfsa2024-35/","hostname":"www.mozilla.org","tags":["REPORT","Advisory","Vendor Advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2024-37/","label":"www.mozilla.org/security/advisories/mfsa2024-37/","hostname":"www.mozilla.org","tags":["REPORT","Advisory","Vendor Advisory"]},{"url":"https://ubuntu.com/security/CVE-2024-7520","label":"ubuntu.com/security/CVE-2024-7520","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2024-7520","label":"www.cve.org/CVERecord?id=CVE-2024-7520","hostname":"www.cve.org","tags":["REPORT"]},{"url":"https://www.mozilla.org/en-US/security/advisories/mfsa2024-33/#CVE-2024-7520","label":"www.mozilla.org/en-US/security/advisories/mfsa2024-33/","hostname":"www.mozilla.org","tags":["REPORT"]},{"url":"https://ubuntu.com/security/notices/USN-6966-1","label":"ubuntu.com/security/notices/USN-6966-1","hostname":"ubuntu.com","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["MGASA-2024-0325","MGASA-2024-0332","MGASA-2024-0334","OPENSUSE-SU-2024:14260-1","OPENSUSE-SU-2024:14572-1","RHSA-2024:5322","RHSA-2024:5323","RHSA-2024:5324","RHSA-2024:5325","RHSA-2024:5326","RHSA-2024:5327","RHSA-2024:5328","RHSA-2024:5329","RHSA-2024:5391","RHSA-2024:5392","RHSA-2024:5393","RHSA-2024:5394","RHSA-2024:5395","RHSA-2024:5396","RHSA-2024:5402","RHSA-2024:5527","RHSA-2024:5528","SUSE-SU-2024:2876-1","SUSE-SU-2024:3003-1","SUSE-SU-2024:3507-1","USN-6966-1"],"duplicates":[],"related":["CGA-8XVC-5X63-P92H","CGA-VXHW-37HM-9QG9","CGA-VXRQ-HG6W-C32Q","OPENSUSE-SU-2024:14260-1","OPENSUSE-SU-2024:14572-1","SUSE-SU-2024:2876-1","SUSE-SU-2024:3003-1","SUSE-SU-2024:3507-1","USN-6966-1"]},"timeline":[{"kind":"published","date":"2024-08-06T12:38:13.117Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2025-03-24T16:39:36.894Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":35,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T22:22:50.219Z","stale":false,"partial":false}}