Mozilla Zaps Firefox Flaw: A Tale of Sandbox Escapes and Cyber Catastrophes
Mozilla has patched a critical Firefox vulnerability, CVE-2025-2857, which could lead to sandbox escapes. Discovered by Andrew McCreight, this flaw echoes a similar issue recently fixed in Chrome. Thankfully, the bug hasn’t been exploited in the wild—unless you count the digital wild west of developers’ imaginations.

Hot Take:
Looks like Firefox just got out of the frying pan and into the fix! Mozilla’s quick patch-up for CVE-2025-2857 means Firefox users can now browse without the fear of sandbox shenanigans. Meanwhile, Chrome and Firefox seem to be competing in a vulnerability pageant, but Firefox’s 136.0.4 update might just steal the crown for best recovery from a critical flaw. At least we know both browsers are working hard to keep the sandbox bully-free!
Key Points:
- Mozilla patched a critical Firefox vulnerability (CVE-2025-2857) that could allow sandbox escape.
- The flaw was discovered after a similar Chrome vulnerability (CVE-2025-2783) was found.
- Mozilla released updates for various Firefox versions, including ESR.
- No known exploitation of the Firefox vulnerability has been reported in the wild.
- Google also tackled a high-severity vulnerability in Chrome, affecting the Mojo IPC library.