CVE-2026-12326
Description
Memory safety bugs in Firefox 151 and Thunderbird 151 could allow arbitrary code execution; fixed in Firefox 152.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Memory safety bugs in Firefox 151 and Thunderbird 151 could allow arbitrary code execution; fixed in Firefox 152.
Vulnerability
Multiple memory safety bugs were present in Firefox 151 and Thunderbird 151. These bugs showed evidence of memory corruption, and with enough effort could be exploited to run arbitrary code. The vulnerabilities were fixed in Firefox 152 [1].
Exploitation
An attacker would need to craft a web page or content that triggers one of the memory safety bugs. No specific exploitation steps are disclosed, but Mozilla presumes that with sufficient effort, arbitrary code execution could be achieved [1].
Impact
Successful exploitation could allow an attacker to execute arbitrary code in the context of the browser, potentially leading to full system compromise. The impact is rated high [1].
Mitigation
The vulnerabilities are fixed in Firefox 152, released on June 16, 2026 [1]. Users should upgrade to Firefox 152 or later. For Thunderbird, users should upgrade to a version that includes the fix when available.
AI Insight generated on Jun 16, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
1- Range: <=151
Patches
0No patches discovered yet.
Vulnerability mechanics
No source-code context for this CVE — mechanics is only generated when we can read the actual fix diff. Without that, the four sections (root cause, attack vector, affected code, fix) would be speculation rather than analysis.
References
5News mentions
0No linked articles in our index yet.