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Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13."}],"value":"Memory safety bugs present in Thunderbird ESR 140.12 and Thunderbird 152. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 153, Firefox ESR 115.38, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13."}],"providerMetadata":{"dateUpdated":"2026-07-22T19:19:19.960Z","orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","shortName":"mozilla"},"references":[{"name":"High-severity memory safety bugs fixed in Thunderbird ESR 140.13 and Thunderbird 153","url":"https://bugzilla.mozilla.org/buglist.cgi?bug_id=2022635%2C2028004%2C2035756%2C2045184%2C2045185%2C2045198%2C2045392%2C2045395%2C2045396%2C2045397%2C2045405%2C2045414%2C2045415%2C2045451%2C2045454%2C2045508%2C2045510%2C2045513%2C2045515%2C2045518%2C2045604%2C2045607%2C2045612%2C2045617%2C2045619%2C2045624%2C2045625%2C2045729%2C2045737%2C2045741%2C2045742%2C2045763%2C2045767%2C2045770%2C2045772%2C2045773%2C2045783%2C2045833%2C2045848%2C2045865%2C2045875%2C2045957%2C2047723%2C2047729%2C2048795%2C2048799%2C2048801%2C2049392%2C2049397%2C2049398%2C2049399%2C2049404%2C2049405%2C2049407%2C2049812%2C2050657%2C2050668%2C2050990%2C2053166%2C2053273%2C2053576%2C2053583%2C2053587"},{"name":"Moderate-severity memory safety bugs fixed in Thunderbird ESR 140.13 and Thunderbird 153","url":"https://bugzilla.mozilla.org/buglist.cgi?bug_id=2043739%2C2045281%2C2045614%2C2045744%2C2045775%2C2047719%2C2049805%2C2051666"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-68/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-69/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-70/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-71/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-72/"}],"title":"Memory safety bugs fixed in Thunderbird ESR 140.13 and Thunderbird 153"}},"cveMetadata":{"assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","assignerShortName":"mozilla","cveId":"CVE-2026-16360","datePublished":"2026-07-21T12:38:24.293Z","dateReserved":"2026-07-20T21:56:09.806Z","dateUpdated":"2026-07-22T19:19:19.960Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-21 13:17:04","lastModifiedDate":"2026-07-22 20:16:51","problem_types":["CWE-119","CWE-119 CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer"],"metrics":{"cvssMetricV31":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-07-22T15:45:36.780309Z","id":"CVE-2026-16360","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"16360","Ordinal":"1","Title":"Memory safety bugs fixed in Thunderbird ESR 140.13 and Thunderbi","CVE":"CVE-2026-16360","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"16360","Ordinal":"1","NoteData":"Memory safety bugs present in Thunderbird ESR 140.12 and Thunderbird 152. 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