{"apiVersion":"1.0","identifier":"CVE-2026-74989","description":"Internally found bugs present in Firefox 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 154 and Thunderbird 154.","publishedAt":"2026-08-18T13:17:40","lastModifiedAt":"2026-08-24T09:16:46","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-74989","cvssScore":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","epssProbability":0.00332,"riskScore":1.01,"affectedProduct":"Firefox","affectedVersions":"<154","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-74989","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-74989","en":"https://www.redsauce.net/en/cves/CVE-2026-74989","fr":"https://www.redsauce.net/fr/cves/CVE-2026-74989","pt":"https://www.redsauce.net/pt/cves/CVE-2026-74989","de":"https://www.redsauce.net/de/cves/CVE-2026-74989","sk":"https://www.redsauce.net/sk/cves/CVE-2026-74989","el":"https://www.redsauce.net/el/cves/CVE-2026-74989"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-74989"}}