CVE-2026-124866
Use-after-free in the Layout component
cve-program · severity unknownCVSS unknownCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-124866
PublishedUse-after-free in the Layout component. This vulnerability was fixed in Firefox 160, Firefox ESR 153.7, Thunderbird 160, and Thunderbird 153.7.
Read the publisher's advisoryAffected versions, risk and source history
Related advisories and sources
Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.
CVE-2026-124866 · CVE overview and exploitation status
cve-program · CVE-2026-124866
Related changes
Linked by CVE identifier- Use-after-free in the Layout component · Affected-version evidence changed · 10 Nov 2026
- Use-after-free in the Layout component · Newly collected advisory · 10 Nov 2026
- Use-after-free in the Layout component · Affected-version evidence changed · 10 Nov 2026