Critical Firefox, Tor Browser sandbox escape flaw fixed (CVE-2025-2857)
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2025-2783 | Sandbox Escape via Mojo Handle Flaw in Google Chrome on Windows (CVE-2025-2783) | 8.3 | 9% | KEV | KEV |
| CVE-2025-2857 | Following the recent Chrome sandbox escape (CVE-2025-2783), various Firefox developers identified a similar pattern in our IPC code | 10.0 | 2% |
From the original article
1 min read at helpnetsecurity.com
Google’s fixing of CVE-2025-2783, a Chrome zero-day vulnerability exploited by state-sponsored attackers, has spurred Firefox developers to check whether the browser might have a similar flaw – and they found it. There’s currently no indication that the Firefox bug (CVE-2025-2857) is under active exploitation, but this should not be surprising: according to Statcounter , Chrome is used by 66.
By @zeljkazorz · helpnetsecurity.com
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