CVE-2021-23961

High

Description

Further techniques that built on the slipstream research combined with a malicious webpage could have exposed both an internal network's hosts as well as services running on the user's local machine. This vulnerability affects Firefox < 85.

SeverityHigh

CVSS7.4

Exploit probability74. percentile1.5%

Product

Mozilla Firefox

PublishedFeb 26, 2021

First seenFeb 26, 2021

How to fix

Update

mozilla firefox85.0 or later

Vendor advisories

debian.org/security/2021/dsa-4895
debian.org/security/2021/dsa-4897
security.gentoo.org/glsa/202104-10
security.gentoo.org/glsa/202104-09

Affected products

Product	Affected versions	Fixed in
mozilla firefox	v < 85.0	85.0
debian debian_linux	9.0, 10.0	—

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