cve.bz

CVE-2016-5261

8.8 highEPSS 4.2%

Integer overflow in the WebSocketChannel class in the WebSockets subsystem in Mozilla Firefox before 48.0 and Firefox ESR < 45.4 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted packets that trigger incorrect buffer-resize operations during buffering.

Severity

CVSS 3.0

8.8 high
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
4.2% chance of exploitation in the next 30 days; higher than 90% of CVEs (scores of 2026-10-31)
CWE
CWE-190
Published
Modified
Record from
the NVD, synced

Affected

References

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