CVE-2016-1962

critical

Published 2016-03-13 · Modified 2026-05-06

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CVSS v3

9.8

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v4 NEW

—

not yet in upstream

VIR risk

9.8

Description

Use-after-free vulnerability in the mozilla::DataChannelConnection::Close function in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7 allows remote attackers to execute arbitrary code by leveraging mishandling of WebRTC data-channel connections.

Predictions

Exploit likelihood

97%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

OS	Version	Status	Fixed in
debian	sid	fixed	`45.0-1`
debian	bookworm	fixed	`45.0esr-1`
debian	bullseye	fixed	`45.0esr-1`
debian	forky	fixed	`45.0esr-1`
debian	trixie	fixed	`45.0esr-1`
suse	13.1	affected

Application impact

Vendor	Product	Versions
mozilla	firefox	`{"endIncluding":"44.0.2"}`
mozilla	firefox	`38.0`
mozilla	firefox	`38.0.1`
mozilla	firefox	`38.0.5`
mozilla	firefox	`38.1.0`
mozilla	firefox	`38.1.1`
mozilla	firefox	`38.2.0`
mozilla	firefox	`38.2.1`
mozilla	firefox	`38.3.0`
mozilla	firefox	`38.4.0`
mozilla	firefox	`38.5.0`
mozilla	firefox	`38.5.1`
mozilla	firefox	`38.6.0`
mozilla	firefox	`38.6.1`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.