WebRTC can use a "WrappedI420Buffer" pixel buffer but the owning image object can be freed while it is still in use.

Published 8 y ago 2018-06-11 · modified 4 mo ago 2026-06-17 · JSON

CVSS

7.5

v3.0 · NVD

CISA KEV

not known exploited

EPSS

2.6%

percentile 85%

Public exploits

none known

WebRTC can use a "WrappedI420Buffer" pixel buffer but the owning image object can be freed while it is still in use. This can result in the WebRTC encoder using uninitialized memory, leading to a potentially exploitable crash. This vulnerability affects Firefox < 60.

Exploit prediction (EPSS)

2.60% probability of exploitation in the next 30 days, higher than 85% of all scored CVEs.

CVSS scores

Assigned by	Version	Score	Vector
NVD	3.0	7.5	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`
NVD	2.0	5.0	`AV:N/AC:L/Au:N/C:N/I:N/A:P`

Affected products

Mozilla Firefox

Classification

Weakness

CWE-416 Use After Free
CWE-908 Use of Uninitialized Resource

References

mozilla.org /security/advisories/mfsa2018-11/ · x_refsource_CONFIRM, x_transferred
bugzilla.mozilla.org /show_bug.cgi?id=1436117 · x_refsource_CONFIRM, x_transferred
securitytracker.com /id/1040896 · vdb-entry, x_refsource_SECTRACK, x_transferred
usn.ubuntu.com /3645-1/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
securityfocus.com /bid/104139 · vdb-entry, x_refsource_BID, x_transferred

Sources

CVE List: CVE-2018-5160
NVD: CVE-2018-5160

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.