CVE-2020-12418

medium

Description

Manipulating individual parts of a URL object could have caused an out-of-bounds read, leaking process memory to malicious JavaScript. This vulnerability affects Firefox ESR < 68.10, Firefox < 78, and Thunderbird < 68.10.0.

References

Advisories
More

https://usn.ubuntu.com/4421-1/

https://security.gentoo.org/glsa/202007-10

https://security.gentoo.org/glsa/202007-09

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00049.html

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00027.html

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00026.html

http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00023.html

https://www.mozilla.org/security/advisories/mfsa2020-26/

https://www.mozilla.org/security/advisories/mfsa2020-25/

https://www.mozilla.org/security/advisories/mfsa2020-24/

https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-4730

https://bugzilla.mozilla.org/show_bug.cgi?id=1641303

Details

Source: Mitre, NVD

Published: 2020-07-09

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N