CVE-2020-14308

Name: CVE-2020-14308
Creator: NVD / NIST
Published: 2020-07-29T20:15:12.397+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.4/10EPSS 0.44%

Last modified Jun 17, 2026

CVE-2020-14308 is a medium-severity vulnerability rated 6.4/10 on the CVSS scale. In grub2 versions before 2.06 the grub memory allocator doesn't check for possible arithmetic overflows on the requested allocation size. This leads the function to return invalid memory allocations which can be further used to cause possible integrity, confidentiality and availability impacts during the boot process.. EPSS estimates a 0.44% chance of exploitation in the next 30 days.

Description

In grub2 versions before 2.06 the grub memory allocator doesn't check for possible arithmetic overflows on the requested allocation size. This leads the function to return invalid memory allocations which can be further used to cause possible integrity, confidentiality and availability impacts during the boot process.

Metrics

CVSS 3.1

6.4/10

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

EPSS Probability

0.44%

34.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-190

Affected Software

Vendor	Product	Versions
Gnu	Grub2	< 2.06
Opensuse	Leap	15.1
Opensuse	Leap	15.2

References

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.htmlMailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/07/29/3Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/09/17/2Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/09/17/4Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/09/21/1Mailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1852009Issue Tracking, Third Party Advisory
https://security.gentoo.org/glsa/202104-05Third Party Advisory
https://security.netapp.com/advisory/ntap-20200731-0008/Third Party Advisory
https://usn.ubuntu.com/4432-1/Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.htmlMailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/07/29/3Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/09/17/2Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/09/17/4Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/09/21/1Mailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1852009Issue Tracking, Third Party Advisory
https://security.gentoo.org/glsa/202104-05Third Party Advisory
https://security.netapp.com/advisory/ntap-20200731-0008/Third Party Advisory
https://usn.ubuntu.com/4432-1/Third Party Advisory

Timeline

Published: Jul 29, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-14308?

How severe is CVE-2020-14308?

CVE-2020-14308 has a CVSS score of 6.4/10 (MEDIUM severity). The EPSS model estimates a 0.44% probability of exploitation in the next 30 days.

How do I fix CVE-2020-14308?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-14308?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST