CVE-2025-49710Critical· 9.8▾ MidnightAn integer overflow was present in `OrderedHashTable` used by the JavaScript engine. This vulnerability was fixed in Firefox 139.0.4.
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 53.9 · likelihood 0.1 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Exploit-prediction probability, daily snapshots since Sep 30.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.7%
Last analysed / modified upstream
An integer overflow was present in OrderedHashTable used by the JavaScript engine. This vulnerability was fixed in Firefox 139.0.4.
firefox < 139.0.4Upgrade past the affected range:
firefox 139.0.4Connected by shared product, vendor, weakness, or advisory.
CVE-2016-9063Critical· 9.8An integer overflow during the parsing of XML using the Expat library
CVE-2026-118008High· 8.8Privilege escalation in the DOM: Navigation component
CVE-2026-117999NoneRace condition in the IPC component
CVE-2026-117976NoneSite isolation issue in the DOM: Navigation component
CVE-2026-118027NoneFrame poisoning in the Layout component
CVE-2026-118024NoneUse-after-free in the Graphics: Text component